Air conditioner indoor unit and air conditioner

Abstract

The utility model discloses an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a face frame and a panel. The face frame is provided with an air outlet and a first air inlet. The panel comprises a main body and a cover plate, the main body is arranged on the face frame, a second air inlet is formed in the main body, or the second air inlet is defined by the panel and the face frame, and the cover plate is movably arranged on the main body or the face frame and used for selectively opening or closing the second air inlet. By arranging the first air inlet and the second air inlet, the air inflow of the air conditioner indoor unit can be increased, and the heat exchange effect of the air conditioner indoor unit is improved. By arranging the movable cover plate, when the air inlet amount of the first air inlet meets the requirement, the cover plate can close the second air inlet. When the air inlet amount of the first air inlet is insufficient, the cover plate can open the second air inlet to increase the air inlet amount. By controlling the opening and closing states of the cover plate, the requirement of the air conditioner indoor unit for the air inlet amount in different states is met, and the structure is simple.

Description

TECHNICAL FIELD

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

[0002] During installation of an air conditioner, an air inlet area exists on the top of the air conditioner indoor unit. Generally, when installed normally, sufficient installation height space needs to be reserved above the air inlet area to ensure air inlet effect of the air conditioner. In related technologies, an air inlet is usually arranged on the top of the air conditioner indoor unit. When there is insufficient installation space, the air inlet has too large air inlet resistance, which easily causes insufficient air inlet volume when the air conditioner indoor unit is working, and leads to an undesirable heat exchange effect of the air conditioner indoor unit. CONTENT OF THE UTILITY MODEL

[0003] Therefore, embodiments of the present application aim to provide an air conditioner indoor unit and an air conditioner to solve the problem of an undesirable heat exchange effect of the air conditioner indoor unit caused by insufficient air inlet volume in the case of insufficient installation space.

[0004] To achieve the above object, the technical solutions adopted by embodiments of the present application are as follows.

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

[0006] a face frame having an air outlet and a first air inlet;

[0007] a panel, the panel comprising a main body and a cover plate, the main body being arranged on the face frame, the main body being formed with a second air inlet, or the main body and the face frame defining the second air inlet, the cover plate being movably arranged on the main body or the face frame, and being used to selectively open or close the second air inlet.

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

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

[0010] When the cover plate is in a state of closing the second air inlet, the cover plate is smoothly connected with the face frame.

[0011] In an embodiment, when the cover plate is in a state of opening the second air inlet, at least part of the cover plate is located inside the main body or inside the face frame; and / or,

[0012] At least part of the cover plate is located outside the main body or outside the face frame when the cover plate is in a state of opening the second air inlet.

[0013] In an embodiment, the first air inlet is arranged at the top of the face frame.

[0014] In an embodiment, the second air inlet is arranged close to the first air inlet.

[0015] In an embodiment, the air conditioner indoor unit comprises an air inlet grille arranged at the first air inlet and / or the second air inlet.

[0016] In an embodiment, the air inlet grille is detachably arranged at the first air inlet and / or the second air inlet.

[0017] In an embodiment, the cover plate comprises a first movement mechanism for driving the cover plate to open or close the second air inlet.

[0018] The second aspect of the application provides an air conditioner comprising the air conditioner indoor unit of any of the above embodiments.

[0019] The application increases the air inlet area of the air inlet and thus the air intake of the air conditioner indoor unit by arranging a first air inlet at the face frame of the air conditioner indoor unit and forming a second air inlet on the main body or by defining the second air inlet by the main body and the face frame. The cover plate can be opened to block dust and other impurities from entering the air conditioner indoor unit through the first air inlet 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 plate can be opened to increase the air intake. The opening and closing state of the cover plate is controlled to meet the demand for air intake of the air conditioner indoor unit in different states, and the structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 4 is a structural schematic diagram of the cover plate in a closed state according to an embodiment of the application;

[0021] Figure 2 FIG. 5 is a structural schematic diagram of the cover plate in an open state according to an embodiment of the application;

[0022] Figure 3 FIG. 6 is a structural schematic diagram of the cover plate in a wind blocking state according to an embodiment of the application.

[0023] REFERENCE SIGNS

[0024] 10, Air conditioner indoor unit; 1, Face 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 movement mechanism; 41, Driving motor; 42, Linkage mechanism; 5, Detection module. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments and technical features in the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as an explanation and illustration of the purpose of the present application, and should not be regarded as an improper limitation on the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the terms "top", "bottom" and the like is the orientation or position relationship based on the drawings. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0027] The air conditioner indoor unit 10 provided by the present application is shown in Figure 1 The air conditioner indoor unit 10 includes a face frame 1 and a panel 2. The face frame 1 has an air outlet 11 and a first air inlet 12. The panel 2 includes a main body 21 and a cover plate 22, the main body 21 is arranged on the face frame 1, the main body 21 is formed with a second air inlet 23, or the main body 21 and the face frame 1 define the second air inlet 23, and the cover plate 22 is movably arranged on the main body 21 or the face frame 1, and is used to selectively open or close the second air inlet 23.

[0028] The face frame 1 is an external frame part of the air conditioner indoor unit 10, and provides support and protection for other internal components of the air conditioner. The air outlet 11 and the first air inlet 12 are arranged on the air conditioner outer frame to realize the air supply function of the air conditioner indoor unit 10.

[0029] The setting position of the air outlet 11 is not limited here, usually, the air outlet 11 is arranged on the side of the air conditioner indoor unit 10 away from the mounting surface, so that the air flow can be blown to the user side to ensure smooth air outlet.

[0030] The setting position and structure of the first air inlet 12 are not limited here, which can ensure smooth air inlet.

[0031] The panel 2 refers to a component on the air conditioner indoor unit 10 for operation, display or decoration, and the panel 2 is usually arranged on the front part of the air conditioner indoor unit 10.

[0032] The second air inlet 23 here refers to the air inlet structure formed on the main body 21 of the panel 2, or the air inlet structure defined by the main body 21 and the face frame 1. In this way, the air inlet area of ​​the air conditioner indoor unit 10 can be increased, thereby increasing the air intake volume of the air conditioner indoor unit 10.

[0033] The cover 22 is set on the main body 21 or the face frame 1 and is divided into an open state and a closed state. Figure 2 The open state here means that the cover 22 does not completely cover the second air inlet 23. For example, it may not cover the second air inlet 23, or it may only cover part of the second air inlet 23. The second air inlet 23 is connected to the outside, and the outside air can enter the interior of the air conditioner indoor unit 10 through the second inlet. Figure 1 The closed state here means that the cover 22 completely covers the second air inlet 23, and the external air is blocked by the cover 22 and cannot smoothly pass through the second air inlet 23 into the interior of the air-conditioning indoor unit 10.

[0034] The specific structure of the cover plate 22 is not limited here, and any structure that can open or close the second air inlet 23 is acceptable.

[0035] For example, the cover plate 22 is a plate-shaped structure corresponding to the shape of the second air inlet 23, and a microporous structure is provided on the cover plate 22. On the one hand, the cover plate 22 can shield the second air inlet 23 and prevent dust and other small debris from entering the air conditioner indoor unit 10. On the other hand, please refer to Figure 3 The cover plate 22 can also be set to a wind-blocking state. In the wind-blocking state, the cover plate 22 is set at the air outlet 11. The airflow from the air outlet 11 is blocked by the microporous structure on the cover plate 22, weakening the blowing, achieving a softening effect on the airflow, achieving the function of preventing cold wind and wind feeling, and reducing the airflow from the air outlet 11 from blowing directly towards the user and causing user discomfort.

[0036] The structure for realizing the movement of the cover plate 22 is not limited here.

[0037] It should be noted that the first air inlet 12 is the main air inlet of the air conditioner indoor unit 10, and external air mainly enters the air conditioner indoor unit 10 through the first air inlet 12. The second air inlet 23 is an auxiliary air inlet of the air conditioner indoor unit 10. When the air intake resistance of the first air inlet 12 is too large, resulting in insufficient air intake, or when the air conditioner indoor unit 10 needs a larger air intake, the second air inlet 23 is opened to intake air.

[0038] The first air inlet 12 is arranged at the face frame 1 of the air conditioner indoor unit 10, and the 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. In this way, the air inlet area of the air inlet is increased, so that the air inlet amount of the air conditioner indoor unit 10 is increased, and the heat exchange effect of the air conditioner indoor unit 10 is improved. When the air inlet amount of the first air inlet 12 meets the demand, the cover plate 22 can close the second air inlet 23 to block dust and other sundries from entering the air conditioner indoor unit 10 through the air inlet. When the air inlet amount of the first air inlet 12 is insufficient, the cover plate 22 can be opened to increase the air inlet amount. By controlling the opening and closing state of the cover plate 22, the demand of the air conditioner indoor unit 10 for the air inlet amount in different states is met, and the structure is simple.

[0039] In some embodiments, referring to Figure 1 , at least part of the second air inlet 23 is directed to the front side of the air conditioner indoor unit 10.

[0040] In the installation of the air conditioner indoor unit 10, the first air inlet 12 located on the face frame 1 needs to reserve sufficient height space from the top to ensure the air inlet amount of the air conditioner indoor unit 10. When the installation space is insufficient, reserving sufficient height space will make the installation height of the air conditioner indoor unit 10 too low, affecting the user's use space.

[0041] Here, at least part of the second air inlet 23 is directed to the front side of the air conditioner indoor unit 10. In this way, at least part of the air inlet area of the second air inlet 23 is located on the front side of the air conditioner indoor unit 10 and is not blocked by the top, so that normal air intake is ensured, and the normal air inlet amount of the air conditioner indoor unit 10 is ensured. Thus, the air conditioner indoor unit 10 can be installed on the top to minimize the occupation of the user's use space by the air conditioner indoor unit 10.

[0042] In some embodiments, referring to Figure 1 , the second air inlet 23 is located on the front side of the first air inlet 12.

[0043] Here, the second air inlet 23 is arranged on the front side of the first air inlet 12, so that the second air inlet 23 is arranged as far as possible to the open space on the front side of the air conditioner indoor unit 10, the air inlet resistance of the second air inlet 23 is reduced, and the air inlet amount of the air conditioner indoor unit 10 is increased.

[0044] In some embodiments, referring to Figure 1 , in the state that the cover plate 22 closes the second air inlet 23, the main body 21, the cover plate 22 and the face frame 1 constitute the appearance surface of the air conditioner indoor unit 10.

[0045] When the cover plate 22 is in the closed state, the cover plate 22 completely covers the second air inlet 23, and the outer surface of the cover plate 22 can form the appearance surface of the air conditioner indoor unit 10 together with the main body 21 and the cover plate 22, that is, the cover plate 22 is part of the appearance surface of the air conditioner indoor unit 10. In this way, the cover plate 22 is integrated with the appearance surface of the air conditioner indoor unit 10, and the problem of the unattractive appearance surface of the air conditioner indoor unit 10 caused by the cover plate 22 is solved. On the other hand, the main body 21, the cover plate 22, and the face frame 1 can be designed in various shapes, and after assembly, the appearance shape of the air conditioner indoor unit 10 is formed to meet the user's requirements for aesthetics.

[0046] In some embodiments, referring 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 with the main body 21.

[0047] Smooth connection means that the surfaces of two components are smoothly and continuously connected at the connection without sudden protrusions or depressions. When the cover plate 22 is in the closed state, the cover plate 22 is smoothly connected with the main body 21. In this way, in terms of vision, there is no obvious sense of abruptness or boundary at the connection between the cover plate 22 and the main body 21, and they can be observed as a whole from a distance, and the whole presents a smooth and harmonious appearance, improving the aesthetics of the air conditioner indoor unit 10. In terms of functionality, the difficulty of cooperation between the cover plate 22 and the main body 21 is reduced, and the compactness of the connection between the cover plate 22 and the main body 21 is improved.

[0048] In some embodiments, referring 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 with the face frame 1.

[0049] When the cover plate 22 is in the closed state, the cover plate 22 is smoothly connected with the face frame 1. Similarly, in terms of vision, there is no obvious sense of abruptness or boundary at the connection between the cover plate 22 and the face frame 1, and they can be observed as a whole from a distance, and the whole presents a smooth and harmonious appearance, improving the aesthetics of the air conditioner indoor unit 10. In terms of functionality, the difficulty of cooperation between the cover plate 22 and the face frame 1 is reduced, and the compactness of the connection between the cover plate 22 and the face frame 1 is improved.

[0050] In some embodiments, when the cover plate 22 is in the state of opening the second air inlet 23, at least part of the cover plate 22 is located inside the main body 21 or inside the face frame 1.

[0051] When the cover plate 22 is in the open state, since the second inlet is at least partially not shielded by the cover plate 22, that is, at least part of the cover plate 22 is not in the area where the second air inlet 23 is located, this part of the cover plate 22 can be arranged inside the main body 21 or inside the face frame 1, and the part of the cover plate 22 that does not shield 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 shields the second air inlet 23, the main body 21 and the face frame 1 continue to constitute the appearance surface of the air conditioner indoor unit 10. In this way, the damage to the appearance surface of the air conditioner indoor unit 10 when the cover plate 22 is in the open state is reduced, and the aesthetic degree of the appearance surface of the air conditioner indoor unit 10 is maintained.

[0052] Here, it should be noted that when the cover plate 22 is in a state of completely opening the second air inlet 23, that is, the second cover plate 22 completely does not shield the second air inlet 23, at this time, the cover plate 22 is completely located inside the main body 21 or inside the face frame, at this time, the appearance surface of the air conditioner indoor unit 10 is composed of the main body 21 and the face frame 1.

[0053] In some embodiments, referring to Figure 2 When the cover plate 22 is in a state of opening the second air inlet 23, at least part of the cover plate 22 is located outside the main body 21 or outside the face frame 1.

[0054] Here, the cover plate 22 is in an open state, and the cover plate 22 is arranged outside the main body 21 and outside the face frame 1, so that the internal space of the main body 21 or the internal space of the face frame 1 is not occupied, and sufficient installation space is provided for other parts of the air conditioner indoor unit 10.

[0055] In some embodiments, referring to Figure 1 The first air inlet 12 is arranged at the top of the face frame 1.

[0056] When the air conditioner indoor unit 10 is installed, it is usually close to the top of the installation space, and the first air inlet 12 is arranged at the top of the face frame 1. In the case of sufficient installation space, the first air inlet can obtain air from the top of the air conditioner indoor unit 10. At the same time, the appearance of the first inlet is not exposed in the visual blind area of the user when normally used, and the aesthetic degree of the air conditioner indoor unit 10 is improved.

[0057] In some embodiments, referring to Figure 1 The second air inlet 23 is arranged close to the first air inlet 12.

[0058] Here, the second air inlet 23 is arranged close to the first air inlet 12, which can mean that there is a gap between the second air inlet 23 and the first air inlet 12, and the air inlet channels inside 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 air inlet channels inside the second air inlet 23 and the first air inlet 12 are independent of each other. Of course, the second air inlet 23 can also be connected to the first air inlet 12 to form a whole, forming a large air inlet.

[0059] In some embodiments, there is a gap between the second air inlet 23 and the first air inlet 12, and the air conditioner indoor unit 10 is provided with a surrounding edge structure on the side of the second air inlet 23 and the first air inlet 12 area, and the second air inlet 23 and the first air inlet 12 are arranged in the surrounding edge. In this way, from the outside, the second air inlet 23 and the first air inlet 12 form a whole, reducing the user's awareness of the separate arrangement of the second air inlet 23 and the first air inlet 12, and improving the appearance of the air conditioner indoor unit 10.

[0060] By arranging the second air inlet 23 close to the first air inlet 12, the second air inlet 23 and the first air inlet 12 reduce the sense of division of the appearance of the air conditioner indoor unit 10, and improve the appearance of the air conditioner indoor unit 10.

[0061] In some embodiments, please refer to Figure 1 The air conditioner indoor unit 10 includes an air inlet grille 3, which is arranged at the first air inlet and / or the second air inlet.

[0062] The air inlet grille 3 serves as a protection device for the air inlet of the air conditioner. The air inlet grille 3 has a mesh structure that can block dust, hair, insects and other debris from entering the interior of the air conditioner, keeping the interior of the air conditioner indoor unit 10 clean. This helps to prolong the service life of the air conditioner indoor unit 10 and improve the refrigeration effect.

[0063] By arranging the air inlet grille at the first air inlet and / or the second air inlet, dust, hair and other debris in the air are intercepted from entering the interior of the air conditioner indoor unit 10, improving the cleanliness of the air conditioner air outlet.

[0064] In some embodiments, please refer to Figure 2 The air inlet grille 3 is detachably arranged at the first air inlet 12 and / or the second air inlet 23.

[0065] 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 in communication with the inside of the air conditioner indoor unit 10, when the cover plate 22 is completely opened and does not shield the second air inlet 23, the air inlet area of the second air inlet 23 can directly pass through the inside of the air conditioner indoor unit 10. By using the air inlet area of the second air inlet 23, the air inlet grille 3 can be conveniently disassembled or installed.

[0066] The specific structure of the air inlet grille 3 is not limited here, and structures that facilitate extension from the second air inlet 23 into the inside of the air conditioner indoor unit 10 and convenient installation can be used.

[0067] Exemplarily, the air inlet grille 3 is a sheet structure, and the air inlet grille 3 can completely cover the first air inlet and the second air inlet inside the air conditioner. By setting a magnetic attraction structure on the edge of the air inlet grille 3, the air inlet grille 3 is installed in cooperation with the magnetic attraction structure inside the air conditioner indoor unit 10, and the air inlet grille 3 is quickly disassembled and installed.

[0068] By setting the air inlet grille 3 as a detachable structure, the installation space provided by the second air inlet 23 in the open state is used, and the air inlet grille 3 can enter the air conditioner indoor unit 10 for installation using this installation space. In this way, the installation of the air inlet grille 3 is facilitated, and the cleaning or replacement of the air inlet grille 3 by the user during subsequent use is facilitated.

[0069] In some embodiments, referring to Figure 2 , the cover plate 22 includes a first movement mechanism 4, and the first movement mechanism 4 drives the cover plate 22 to open or close the second air inlet 23.

[0070] The specific structure of the first movement mechanism 4 is not limited here, and structures that can drive the cover plate 22 to move to open or close the second air inlet 23 can be used.

[0071] Exemplarily, the first movement mechanism 4 includes a driving motor 41, a gear, and a rack, wherein the gear is connected with the driving motor 41, and the rack is connected with the cover plate 22. In some embodiments, a rack structure suitable for the gear can be machined on the cover plate 22. A sliding rail is provided on the main body 21 or the face frame 1, and the cover plate 22 is in sliding cooperation with the sliding rail. The driving motor 41 drives the gear to rotate, the gear is engaged with the rack, and the cover plate 22 moves up and down to realize opening or closing of the second air inlet 23 by the cover plate 22.

[0072] Exemplarily, the second driving mechanism includes a driving motor 41 and a connecting rod mechanism 42, one end of the connecting rod mechanism 42 is connected with the driving motor 41, and the other end is connected with the cover plate 22. The driving motor 41 drives the connecting rod to rotate, and drives the cover plate 22 to move away from or close to the second air inlet 23, changes the covering area of the cover plate 22 to the second air inlet 23, realizes the opening or closing of the second air inlet 23 by the cover plate 22, and in addition, the connecting rod mechanism 42 can also drive the cover plate 22 to be partially covered, so that the cover plate 22 is in a semi-covered state. On the other hand, please refer to Figure 3 , the connecting rod structure can also realize the movement of the cover plate 22 to the air outlet 11, and the cover plate 22 is in a wind blocking state. The micro-porous structure on the cover plate 22 is used to weaken the airflow of the air outlet 11, soften the airflow, and improve the user experience.

[0073] By setting the first movement mechanism 4 to drive the cover plate 22 to open or close the second air inlet 23, the first movement mechanism 4 can be connected to the control system of the air conditioner, and can cooperate with different use scenarios to switch the state of the cover plate 22, realizing automatic control.

[0074] The application provides an air conditioner, which comprises the air conditioner indoor unit 10 in any of the above embodiments. Thus, the air conditioner can be normally installed and used in the case of having sufficient installation space and not having sufficient installation space.

[0075] Next, the operation of the air conditioner is described.

[0076] In some embodiments, the air conditioner indoor unit 10 comprises a face frame 1, a panel 2 and a detection module 5. The face frame 1 has an air outlet 11 and a first air inlet 12. The panel 2 comprises a main body 21 and a cover plate 22. The main body 21 is arranged on the face frame 1. The main body 21 forms a second air inlet 23, or the main body 21 and the face frame 1 define the second air inlet 23. The cover plate 22 is movably arranged on the main body 21 or the face frame 1, and is used to selectively open or close the second air inlet 23. The operation process of the air conditioner indoor unit 10 is as follows:

[0077] The air conditioner indoor unit 10 is controlled to start the installation and debugging mode.

[0078] The installation and debugging mode is a special working mode of the air conditioner indoor unit 10, which is started when the air conditioner is initially installed or specific maintenance and debugging operations are performed. In this mode, the air conditioner performs a series of specific detection and control actions. In the embodiments of the application, the installation and debugging mode refers to the air conditioner indoor unit 10 adapting to different installation spaces. In the installation and debugging mode, the air conditioner indoor unit 10 adjusts the air inlet amount of the second air inlet 23 by controlling the opening and closing of the cover plate 22, so as to meet the installation environment.

[0079] After entering the installation and debugging mode, the air conditioner will perform a series of subsequent actions for installation environment detection and adaptation. This helps to accurately adjust the air intake state of the air conditioner during the initial installation or when some special debugging requirements are met, avoiding unnecessary detection and adjustment actions in normal operation mode, reducing energy consumption and component wear and tear, etc.

[0080] The control detection module 5 detects the distance between the top of the face frame 1 and the obstacle.

[0081] The detection module 5 is a device for detecting distance, which here includes but is not limited to infrared sensors, ultrasonic sensors, etc. It is mainly responsible for detecting the distance between the top of the face frame 1 and the obstacle in the air conditioner indoor unit 10, in order to provide the basis for subsequent control actions. Its detection accuracy and reliability will affect the effectiveness of the entire air conditioner control strategy.

[0082] The control detection module 5 detects the distance between the top of the face frame 1 and the obstacle. Through the work of the detection module 5, the spatial distance information of the face frame 1 top and the possible obstacles (such as ceiling, hanging objects, etc.) in the air conditioner installation environment can be obtained. This distance information is very important for judging whether the air intake space of the air conditioner is sufficient.

[0083] If the distance between the top of the face frame 1 and the obstacle is greater than the installation distance, the control cover plate 22 closes the second air inlet 23. Or, if the distance between the top of the face frame 1 and the obstacle is less than the installation distance, the control cover plate 22 opens at least part of the second air inlet 23.

[0084] The installation distance is a pre-set standard distance value, which is used to compare with the distance between the top of the face frame 1 and the obstacle detected by the detection module 5, so as to judge whether the state of the cover plate 22 needs to be adjusted. This distance value is usually determined according to the design requirements, performance characteristics of the air conditioner, as well as a large number of experiments and practical application experience. Different models and specifications of air conditioners may have different installation distance settings.

[0085] Exemplarily, the installation distance is 5 cm. If the distance between the top of the face frame 1 and the obstacle is greater than or equal to 5 cm, at this time, the air intake space of the air conditioner indoor top is sufficient, and there is no need to increase the air intake area, at this time the control cover plate 22 can be closed to close the second air inlet 23. If the distance between the top of the face frame 1 and the obstacle is less than 5 cm, at this time the air intake space of the air conditioner indoor top is insufficient, at this time the control cover plate 22 is opened to open at least part of the second air inlet 23, so as to increase the air inlet area of the air inlet and increase the air intake amount of the air conditioner indoor unit 10. Here, the control cover plate 22 can be opened to open all the second air inlets 23, or it can be opened to open part of the air inlets. The specific opening degree is determined according to the size of the required air intake amount of the air conditioner indoor unit 10.

[0086] The action of the cover plate 22 is controlled according to the comparison result of the detected distance and the installation distance. If the distance between the top of the face frame 1 and the obstacle is greater than the installation distance, it means that there is enough space above the air conditioner for air to enter smoothly, and at this time the cover plate 22 is controlled to close the second air inlet 23, which can reduce unnecessary air inlet channels and prevent too much dust and other impurities from entering the air conditioner interior, and also helps to optimize the air flow organization inside the air conditioner under certain working conditions, thereby improving the refrigeration or heating efficiency. On the contrary, if the distance between the top of the face frame 1 and the obstacle is less than the installation distance, it means that the air inlet space above the air conditioner is limited, and at this time the cover plate 22 is controlled to open at least part of the second air inlet 23, which can increase the air inlet area and ensure that the air conditioner has enough air to enter to maintain normal operating performance and avoid problems such as poor refrigeration or heating effect caused by insufficient air intake.

[0087] By detecting the distance between the top of the face frame 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 room with relatively spacious space or in a space-limited environment with a low ceiling, and can ensure normal operation and maintain good performance of the air conditioner, thereby expanding the application range of the air conditioner.

[0088] In some embodiments, the air conditioner indoor unit 10 includes a strong mode or a maintenance mode, in which the cover plate 22 is opened to at least part of the second air inlet 23.

[0089] The strong mode is a special mode of operation of the air conditioner indoor unit 10, in which the air conditioner operates at a higher power to quickly reach the set temperature or maintain the indoor temperature stable under extreme environmental conditions. The air conditioner usually increases the fan speed, increases the refrigeration or heating power, etc., aiming to provide stronger refrigeration or heating effect in a short time to meet the user's demand for rapid adjustment of the indoor temperature environment, for example, when the user wants to quickly cool down in hot summer or needs to quickly warm up in cold winter.

[0090] When the air conditioner indoor unit 10 is in the strong mode, more air volume circulation is needed to achieve rapid refrigeration or heating. The cover plate 22 is opened to at least part of the second air inlet 23, which can increase the air inlet area into the air conditioner, so that more air can be sucked into the air conditioner for heat exchange treatment, thereby improving the refrigeration or heating efficiency of the air conditioner and changing the indoor temperature environment more quickly to meet the user's expectation of rapid temperature adjustment.

[0091] In some embodiments, the strong mode can be started by the user according to the user's use demand. In addition, in some other embodiments, the detection module 5 has an infrared sensor which can be used to detect the number of people in the environment where the air conditioner is used. If the number of people exceeds a set value, the air conditioner indoor unit 10 can automatically start the strong mode to meet the demand of multiple people using.

[0092] The maintenance mode is a working mode specially designed for air conditioner maintenance personnel when checking, maintaining and troubleshooting the air conditioner. In this mode, part of the functions or components of the air conditioner will be set to a certain state, so that the maintenance personnel can more conveniently detect and maintain the internal structure, circuit system, sensor, etc. of the air conditioner, for example, the fan may be continuously running, some protection functions may be temporarily disabled, or the indicator light of a certain component may be on to show its working state, which helps to quickly locate and solve the air conditioner fault problem, ensuring the normal operation and service life of the air conditioner.

[0093] In the maintenance mode, opening at least part of the second air inlet 23 may be to facilitate the maintenance personnel to check and test the air duct, fan, etc. inside the air conditioner related to air flow. For example, the maintenance personnel can judge whether the fan is working normally, whether the air duct is blocked, etc. by observing the air flow of the air inlet, detecting the wind speed and other parameters. At the same time, in some maintenance operations, it may be necessary to simulate the air flow state during normal operation, and opening the air inlet helps to create such conditions to more accurately diagnose and repair faults.

[0094] In some embodiments, the air conditioner indoor unit 10 can start the sleep mode.

[0095] The sleep mode is a running mode of the air conditioner to adapt to the needs of people during sleep for environmental comfort and energy saving. In this mode, the air conditioner will adjust the running parameters such as temperature, wind speed, air volume, etc. according to the preset program, to create a quiet, comfortable and relatively energy-saving sleep environment. Generally, the air conditioner will gradually increase or decrease the set temperature over time in sleep mode to avoid affecting sleep quality due to temperature discomfort during sleep, and will also reduce the fan speed to reduce noise interference.

[0096] The control cover plate 22 opens at least part of the second air inlet 23, and controls the cover plate 22 to close the second air inlet 23 after a preset time.

[0097] The preset time is a time length value set in advance in the air conditioner sleep mode program. This time value is determined based on research and a large amount of experimental data on the physiological changes of the human body during sleep and the regularity of environmental comfort changes.

[0098] For example, people are generally more sensitive to environmental changes at the beginning of sleep, and need a certain amount of air flow to maintain comfort, while the demand for air flow gradually decreases as sleep deepens. The preset time is used to define this transition period from the need for air intake to the reduction of air intake, and different brands and models of air conditioners may set different preset time values according to their own design philosophy and target user groups.

[0099] When the air conditioner indoor unit 10 is controlled to start the sleep mode, first, control the cover plate 22 to open at least part of the second air inlet 23. In order to meet the human body in the sleep starting stage, the appropriate air flow helps to keep the indoor air fresh and comfortable, avoids the stuffy feeling caused by the air not flowing, and makes the human body enter the sleep state more smoothly.

[0100] After a preset time, the human body has usually entered a deeper sleep stage, at which time the perception and demand for air flow are relatively reduced, and continuous air flow may bring some adverse factors such as noise, excessive evaporation of body surface moisture, etc. to affect the sleep quality. Therefore, at this time, the cover plate 22 is controlled to close the second air inlet 23, which can reduce unnecessary air entering and flowing, reduce the air conditioner running noise, keep the indoor temperature relatively stable, reduce the human body heat loss or uneven distribution of heat caused by air flow, and further improve the comfort and stability of sleep.

[0101] In some embodiments, the air conditioner indoor unit 10 can start the anti-freezing mode.

[0102] The anti-freezing mode is a protection mode set by the air conditioner indoor unit 10 to prevent the evaporator from frosting or even icing under certain low-temperature environment or operating conditions. When the air conditioner is running, if the evaporator surface temperature is too low, the water vapor in the surrounding air will condense into frost or ice on its surface, which not only reduces the heat exchange efficiency of the evaporator and affects the cooling and heating effect of the air conditioner, but also can cause damage to the evaporator and increase maintenance costs. The anti-freezing mode monitors and adjusts the temperature of the evaporator through a series of control strategies to ensure its safe operation within a safe range.

[0103] Based on the temperature change of the evaporator of the air conditioner indoor unit 10, the opening degree of the second air inlet 23 is adjusted.

[0104] The evaporator is a key heat exchange component in the air conditioner refrigeration system, located inside the air conditioner indoor unit 10. It is composed of a series of metal pipes and fins, and the refrigerant flows in the pipes to achieve the function of absorbing heat (when cooling) or releasing heat (when heating) through heat exchange with indoor air. The temperature of the evaporator directly affects its heat exchange effect and the state of the surrounding air, so it is an important monitoring and adjusting object in the air conditioner operation control.

[0105] When the air conditioner indoor unit 10 starts the anti-freezing mode, the opening degree of the second air inlet 23 is adjusted based on the temperature change of the evaporator of the air conditioner indoor unit 10.

[0106] During normal operation, the temperature of the evaporator needs to be maintained within a suitable range to ensure good heat exchange efficiency. If the evaporator temperature starts to drop and approaches a critical temperature at which frost or ice may form, the air conditioning control system adjusts the opening degree of the second air inlet 23 to change the amount and flow rate of air entering the air conditioning interior. For example, when the evaporator temperature is too low, the opening degree of the second air inlet 23 is appropriately increased, so that more indoor air can flow through the evaporator. Since air has a certain amount of heat, increasing the air flow rate can provide more heat to the evaporator, thereby increasing the temperature of the evaporator and preventing frost or ice formation.

[0107] Conversely, if the evaporator temperature is relatively high and within a safe range, the opening degree of the second air inlet 23 can be appropriately reduced to optimize the air flow organization and energy utilization efficiency in the air conditioning interior.

[0108] In some embodiments, the detection module 5 includes a multi-point temperature sensor. Distributing multiple high-precision temperature sensors uniformly on the surface of the evaporator can more comprehensively and accurately obtain temperature information at different positions of the evaporator, avoiding misjudgment or inaccurate control due to local temperature abnormalities. For example, temperature sensors are arranged at the inlet, outlet, and different regions in the middle of the evaporator. The air conditioning control system can comprehensively judge the overall temperature state of the evaporator according to these multi-point temperature data, and thereby more reasonably adjust the opening degree of the second air inlet 23 and other related operating parameters.

[0109] Real-time monitoring of the evaporator temperature and adjustment of the opening degree of the second air inlet 23 according to changes in the evaporator temperature effectively prevents frost or ice formation on the evaporator. Frost or ice formation can reduce the heat exchange performance of the evaporator, and long-term accumulation can cause permanent damage such as evaporator pipe rupture and fin deformation. This control strategy of the anti-freezing mode can ensure that the evaporator always operates in a safe and efficient state, reducing the cost of air conditioning maintenance and replacement due to evaporator failure, and significantly prolonging the service life of the air conditioner.

[0110] In some embodiments, if the temperature of the evaporator is less than or equal to a first temperature, the cover plate 22 completely opens the second air inlet 23.

[0111] The first temperature is a pre-set evaporator temperature threshold. When the evaporator temperature drops to less than or equal to this value, it indicates that the evaporator is in a low-temperature state and has a greater risk of frost or ice formation. This value is usually determined according to the design specifications of the air conditioner, the characteristics of the refrigerant, and a large number of experimental tests. Different models and refrigeration and heating capacities of air conditioners may have different first temperature settings, generally in the range of close to 0°C or even slightly below 0°C.

[0112] For example, the first temperature is 4°C.

[0113] When the temperature of the evaporator is less than or equal to the first temperature, it means that the evaporator has entered the low-temperature danger zone, and 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, allowing more warm air in the room (relative to the temperature of the evaporator) to quickly flow through the evaporator, using the heat of the air to raise the temperature of the evaporator, preventing frost or ice from further deteriorating, ensuring that the normal heat exchange function of the air conditioner is maintained, and avoiding the impact of the evaporator failure on the operation of the entire refrigeration or heating system.

[0114] If the temperature of the evaporator is equal to the second temperature, the control cover 22 fully closes the second air inlet 23.

[0115] The second temperature is also a pre-set evaporator temperature threshold, when the evaporator temperature reaches this value, it means that the temperature of the evaporator is in a normal or higher safety range, and additional air flow is not needed to raise the temperature to prevent freezing. Its value is greater than the first temperature, and the specific value also depends on the design and performance requirements of the air conditioner. At this temperature, the air conditioner can maintain a relatively efficient operating state, and there is no need to worry about frosting problems, so the second air inlet 23 can be closed to optimize internal airflow and reduce the entry of dust and other impurities.

[0116] Exemplarily, the first temperature is 6℃.

[0117] If the temperature of the evaporator is equal to the second temperature, the control cover 22 fully closes the second air inlet 23. Since the evaporator temperature is at a normal and safe higher level at this time, additional air flow is not needed to prevent freezing, and closing the air inlet can reduce unnecessary air entering the air conditioner interior, helping to optimize the air flow organization inside the air conditioner, allowing the air conditioner to more efficiently exchange heat when operating normally, reducing energy loss, while also preventing dust and other impurities from entering the air conditioner interior, protecting the various components inside the air conditioner and extending their service life.

[0118] If the temperature of the evaporator is between the first temperature and the second temperature, 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 value of the temperature of the evaporator, and the first temperature is less than the second temperature.

[0119] The opening degree of the second air inlet 23 refers to the degree to which the second air inlet 23 is opened, which is used to measure the size of the area through which air enters the internal passage of the air conditioner indoor unit 10. It can be expressed in percentage or specific angle, area, etc. For example, an opening degree of 0% means that the second air inlet 23 is fully closed, and no air enters the air conditioner from this air 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 largest passage area.

[0120] When the temperature of the evaporator is between the first temperature and the second temperature, it indicates that the evaporator temperature is in an intermediate state, neither in an extremely low temperature requiring a large amount of incoming air to warm up, nor in a safe high temperature that can completely close the air inlet. At this time, 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 value of the temperature of the evaporator. That is, the closer the evaporator temperature is to the first temperature, the larger the air inlet opening degree. The closer to the second temperature, the smaller the air inlet opening degree.

[0121] In this way, the amount of incoming air can be accurately adjusted according to the real-time temperature of the evaporator, so that the air conditioner can optimize the operating efficiency as much as possible under the premise of ensuring that the evaporator does not frost, and avoid problems such as energy waste and air flow turbulence caused by excessive air intake.

[0122] For example, when the temperature of the evaporator is between the first temperature and the second temperature, the opening degree of the second air inlet 23 is inversely proportional to the value of the temperature of the evaporator, which satisfies the following formula:

[0123]

[0124] Wherein, A is the opening degree of the second air inlet 23, T0 is the temperature of the evaporator, T1 is the first temperature, and T2 is the second temperature.

[0125] In some embodiments, if the temperature of the evaporator is greater than the second temperature and less than the third temperature, then the control cover 22 opens part of the second air inlet 23, and the second temperature is less than the second temperature.

[0126] 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 higher temperature state, and closing the second air inlet 23 at this time can avoid excessive heat loss or excessive air inflow affecting the balance of heat exchange and the stability of the air conditioner.

[0127] For example, the third temperature is 8℃.

[0128] When the temperature of the evaporator is greater than the second temperature and less than the third temperature, the control cover 22 opens part of the second air inlet 23.

[0129] If the temperature of the evaporator is greater than or equal to the third temperature, then the control cover 22 completely closes the second air inlet 23.

[0130] If the temperature of the evaporator is greater than or equal to the third temperature, the control cover 22 completely closes the second air inlet 23. This is to prevent too much air from entering the air conditioner, to avoid excessive air flow from taking away too much heat, to cause the air conditioner to reduce the cooling or heating effect, and to protect other parts of the air conditioner from damage or performance degradation that may be caused by long-term impact of high-temperature air flow, and to maintain the stable operation of the air conditioning system in a high-temperature environment.

[0131] Exemplarily, when the anti-freezing mode is first started, the detection module 5 detects the evaporator temperature, when the evaporator temperature is between the first temperature and the second temperature, the control cover plate 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 value of the evaporator temperature. When the evaporator temperature is equal to 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 decrease of the air intake amount, the temperature of the evaporator may decrease, which may cause the second air inlet 23 to be opened soon. When the evaporator temperature rises to be greater than the second temperature and less than the third temperature, the control cover plate 22 opens part of the second air inlet 23, and the opening degree of the second air inlet 23 at this time can be a fixed value, for example, the fixed value is 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 plate 22 completely closes the second air inlet 23.

[0132] By controlling the cover plate 22 to open part of the second air inlet 23 when the evaporator temperature is greater than the second temperature and less than the third temperature, setting this opening degree value as a fixed value, it is beneficial to reduce the repeated opening and closing of the cover plate 22 at the second temperature which is easy to change, causing wear of the cover plate 22 and reducing the noise of repeated movement. By setting the third temperature threshold and accurately controlling the opening degree of the second air inlet 23 in different temperature intervals, the air conditioner can more accurately maintain the temperature of the evaporator in an ideal range. Whether in the low temperature interval to prevent the evaporator from frosting, or in the high temperature interval to prevent the evaporator from overheating and optimize heat exchange, stable temperature control can be achieved. This helps to improve the stability of the air conditioning refrigeration or heating effect, so that the indoor temperature can be more uniformly and continuously maintained within the user's set comfortable range, reducing the discomfort caused by temperature fluctuations and improving the user experience.

[0133] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application is included in the protection scope of the present application.

Claims

1. An air conditioner indoor unit characterized by comprising: Comprise: a face frame having an air outlet and a first air inlet; a panel, the panel comprising a main body and a cover plate, the main body being arranged on the face frame, the main body being formed with a second air inlet or the main body and the face frame defining a second air inlet, the cover plate being movably arranged 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 by, At least part of the second air inlet faces the front side of the air conditioner indoor unit; 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 by, In the state that the cover plate closes the second air inlet, the main body, the cover plate and the face frame constitute the appearance surface of the air conditioner indoor unit. 4.The indoor unit of the air conditioner according to claim 1, characterized by, In the state that the cover plate closes the second air inlet, the cover plate is smoothly connected with the main body; and / or, In the state that the cover plate closes the second air inlet, the cover plate is smoothly connected with the face frame. 5.The indoor unit of the air conditioner according to claim 1, characterized by In the state that the cover plate opens the second air inlet, at least part of the cover plate is located inside the main body or inside the face frame; And / or, In the state that the cover plate opens the second air inlet, at least part of the cover plate is located outside the main body or outside the face frame. 6.The indoor unit of an air conditioner according to any one of claims 1-5, characterized in that, The first air inlet is arranged at the top of the face frame; and / or, The second air inlet is arranged close to the first air inlet.

7. The air conditioner indoor unit according to any one of claims 1-5, characterized by, The air conditioner indoor unit comprises an air inlet grille arranged at the first air inlet and / or the second air inlet. 8.The indoor unit of the air conditioner according to claim 7, characterized by, The air inlet grille is detachably arranged at the first air inlet and / or the second air inlet. 9.The indoor unit of the air conditioner according to any one of claims 1-4, wherein The cover plate comprises a first movement mechanism for driving the cover plate to open or close the second air inlet.

10. An air conditioner characterized by comprising: The air conditioner comprises the air conditioner indoor unit according to any one of claims 1-9.

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