Air conditioner and control method, device and storage medium thereof

Abstract

The application discloses an air conditioner and a control method, device and storage medium thereof. The air conditioner comprises a shell, a wind wheel and a wind channel switching plate. The shell is formed with a wind channel, the wind wheel is arranged in the wind channel, and the wind channel switching plate constitutes part of the wind channel wall. The wind channel switching plate is arranged on the circumferential side of the wind wheel and is movably arranged in the radial direction of the wind wheel to adjust the noise value of the air conditioner. In the application, the wind channel switching plate is movably arranged, and the distance between the wind channel switching plate and the wind wheel in the radial direction changes with the movement of the wind channel switching plate. When the air conditioner works in different working conditions, the wind channel switching plate can be moved to a reasonable distance from the wind wheel to match the relatively small noise value of the air conditioner. The air conditioner provided by the application can more accurately adjust the working noise of the air conditioner by controlling the movement of the wind channel switching plate, so that the noise value of the air conditioner is relatively small when the air conditioner works in different working conditions, and the user experience is more comfortable.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an air conditioner and its control method, device and storage medium. Background Technology

[0002] In existing air conditioners, a fan assembly is typically installed in the heat exchange duct, which drives airflow through the duct. The size of the gap between the duct wall and the impeller of the fan assembly affects the operating noise of the air conditioner.

[0003] In existing air conditioners, the distance between the duct wall and the fan is usually a fixed value. The initial design of the heat exchange duct typically only considers parameters under rated operating conditions. The distance between the duct wall and the fan in existing air conditioners is usually designed based on the optimal clearance for low operating noise when the air conditioner is running at high fan speed. However, in actual use, the time spent running at high fan speed is not large, resulting in higher operating noise when the air conditioner is running at other fan speeds. Summary of the Invention

[0004] The main objective of this invention is to provide an air conditioner with better noise control, as well as its control method, device, and storage medium.

[0005] To achieve the above objectives, the present invention provides an air conditioner, comprising:

[0006] The casing forms an air duct;

[0007] A wind turbine, disposed in the aforementioned air duct; and,

[0008] A duct switching plate forms part of the duct wall. The duct switching plate is located on the periphery of the wind turbine and is movably arranged relative to the wind turbine in the radial direction of the wind turbine.

[0009] In one embodiment, the wind turbine is a cross-flow wind turbine, and the duct switching plate is arranged in an arc-shaped plate that bends toward the side away from the cross-flow wind turbine.

[0010] In one embodiment, the minimum distance t between the duct switching plate and the outer periphery of the wind turbine is greater than or equal to 3 mm and less than or equal to 7 mm.

[0011] In one embodiment, the air duct switching plate is rotatably arranged around a rotating axis, which is arranged side by side with the rotating axis of the cross-flow fan.

[0012] In one embodiment,

[0013] The housing has an air inlet communicating with the air duct, a first air outlet, and a second air outlet located below the first air outlet. The air duct includes an air inlet section adjacent to the air inlet, a first air outlet section adjacent to the first air outlet, and a second air outlet section adjacent to the second air outlet; and,

[0014] The air duct switching plate has a first working position and a second working position during its active stroke. In the first working position, the air inlet section is connected to the first air outlet section, and in the second working position, the air inlet section is connected to the second air outlet section.

[0015] In one embodiment, the air inlet is located between the first air outlet and the second air outlet in the vertical direction, and the air duct switching plate and the air inlet are arranged opposite to each other on both sides of the cross-flow fan.

[0016] In one embodiment, the air duct switching plate has a first rotating end and a second rotating end arranged opposite to each other on both sides of the rotating shaft, the first rotating end being close to the first air outlet section and the second rotating end being close to the second air outlet section;

[0017] When the air duct switching plate is in the first working position, the first rotating end is away from the cross-flow fan wheel, and the second rotating end is close to the cross-flow fan wheel. When the air duct switching plate is in the second working position, the first rotating end is close to the cross-flow fan wheel, and the second rotating end is away from the cross-flow fan wheel.

[0018] In one embodiment, the housing has a mounting side and a front side located in front of the mounting side, and the air inlet is located on the front side of the housing and is positioned between the first air outlet and the second air outlet in the vertical direction.

[0019] In one embodiment, the front side of the housing is provided with a panel extending in the vertical direction. The panel is closable at the air inlet. When the panel is open, it has a first open position in which the upper end of the panel is rotatably connected to the housing and the lower end of the panel is separated from the housing, and a second open position in which the lower end of the panel is rotatably connected to the housing and the upper end of the panel is separated from the housing.

[0020] In one embodiment, the housing is further provided with a first cover plate and a second cover plate, the first cover plate being closable at the first air outlet and the second cover plate being closable at the second air outlet.

[0021] To achieve the above objectives, the present invention also proposes a control method for an air conditioner, wherein the air conditioner is as described above, and the control method for the air conditioner includes:

[0022] Obtain the airflow setting of the air conditioner;

[0023] The air duct switching plate is controlled to move to the matching position according to the air outlet speed, so that the noise level of the air conditioner is within the preset range.

[0024] In one embodiment, the step of obtaining the air outlet speed of the air conditioner includes:

[0025] Obtain the heat exchange mode and air outlet speed of the air conditioner;

[0026] The step of controlling the air duct switching plate to move to the matching position according to the air outlet speed so that the noise level of the air conditioner is within a preset range includes:

[0027] The matching position of the air duct switching plate is obtained according to the mapping relationship between the air outlet speed corresponding to the heat exchange mode and the matching position.

[0028] Control the movement of the air duct switching plate to the matching position.

[0029] In one embodiment, the air duct switching plate is rotatably disposed on the housing;

[0030] The step of obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet speed corresponding to the heat exchange mode and the matching position includes:

[0031] The matching angle of the air duct switching plate is obtained according to the mapping relationship between the air outlet speed and the matching angle corresponding to the heat exchange mode.

[0032] The step of controlling the movement of the air duct switching plate to the matching position includes:

[0033] The target switching angle is determined based on the difference between the current angle of the air duct switching plate and the matching angle;

[0034] Control the air duct switching plate to rotate through the target switching angle.

[0035] In one embodiment, the air conditioner is an air conditioner as described above;

[0036] After the step of obtaining the heat exchange mode and air outlet speed of the air conditioner, the following is included:

[0037] When the heat exchange mode is cooling mode, control the panel to switch to the first open position;

[0038] When the heat exchange mode is heating mode, control the panel to switch to the second open position.

[0039] In one embodiment, the air conditioner is an air conditioner as described above;

[0040] After the step of obtaining the heat exchange mode and air outlet speed of the air conditioner, the following is included:

[0041] When the heat exchange mode is cooling mode, the first cover plate is opened and the second cover plate is closed.

[0042] When the heat exchange mode is heating mode, the first cover plate is closed and the second cover plate is opened.

[0043] To achieve the above objectives, the present invention also proposes a control device, comprising: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, wherein the air conditioner control program, when executed by the processor, implements the steps of the air conditioner control method as described above.

[0044] To achieve the above objectives, the present invention also proposes an air conditioner, which includes the control device described above.

[0045] To achieve the above objectives, the present invention also proposes a storage medium storing a control program for an air conditioner, wherein the control program for the air conditioner, when executed by a processor, implements the steps of the air conditioner control method described above.

[0046] In this invention, the air conditioner includes a casing, a fan, and an air duct switching plate. The casing forms an air duct, the fan is disposed within the air duct, and the air duct switching plate constitutes part of the air duct wall. The air duct switching plate is located around the fan and is movably positioned relative to the fan in the radial direction to adjust the noise level of the air conditioner. In the embodiment provided by this invention, the air duct switching plate is movably positioned so that the radial distance between it and the fan changes with the movement of the air duct switching plate. When the air conditioner operates under different conditions, the air duct switching plate can move to a position where the distance between it and the fan is reasonable, resulting in a relatively low operating noise level for the air conditioner. The air conditioner provided by this invention can more precisely adjust the operating noise of the air conditioner by controlling the movement of the air duct switching plate, resulting in relatively low noise levels under different operating conditions and a more comfortable user experience. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of an embodiment of the air conditioner provided by the present invention in the off state;

[0048] Figure 2 for Figure 1 A schematic diagram of the air outlet of a central air conditioner in cooling mode;

[0049] Figure 3 for Figure 1 A schematic diagram of the air outlet of a central air conditioner in heating mode;

[0050] Figure 4 for Figure 1 Schematic diagram of the working position of the stroke channel switching plate;

[0051] Figure 5 This is a schematic diagram illustrating the relationship between airflow-to-noise ratio and spacing in an embodiment of the air conditioner provided by the present invention.

[0052] Figure 6 This is a schematic diagram of the air outlet of an air conditioner in cooling mode in the prior art;

[0053] Figure 7 This is a schematic diagram of the air outlet of an air conditioner in heating mode in the prior art;

[0054] Figure 8 for Figure 1 Front view of the central cross-flow wind turbine;

[0055] Figure 9 for Figure 8 Sectional view at point AA;

[0056] Figure 10 for Figure 8 Sectional view at point BB;

[0057] Figure 11 This is a schematic diagram of the heat exchange airflow distribution in the cooling mode of an air conditioner in the prior art;

[0058] Figure 12 This is a schematic diagram of the heat exchange airflow distribution in the heating mode of an air conditioner in the prior art;

[0059] Figure 13 A schematic diagram of the heat exchange airflow distribution in cooling mode of an embodiment of the air conditioner provided by the present invention;

[0060] Figure 14 A schematic diagram of the heat exchange airflow distribution in heating mode of an embodiment of the air conditioner provided by the present invention;

[0061] Figure 15 This is a schematic diagram of the structure of the control device for the hardware operating environment involved in the embodiments of the present invention.

[0062] Figure 16 A schematic diagram of a first embodiment of the control method for an indoor air conditioning unit provided by the present invention;

[0063] Figure 17 A schematic diagram of a second embodiment of the control method for an indoor air conditioning unit provided by the present invention;

[0064] Figure 18 This is a schematic diagram of a third embodiment of the control method for an indoor air conditioning unit provided by the present invention.

[0065] Explanation of icon numbers:

[0066]

[0067]

[0068] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0069] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0070] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0071] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0072] In existing air conditioners, the distance between the duct wall and the fan is usually a fixed value. The initial design of the heat exchange duct typically only considers parameters under rated operating conditions. The distance between the duct wall and the fan in existing air conditioners is usually designed based on the optimal clearance for low operating noise when the air conditioner is running at high fan speed. However, in actual use, the time spent running at high fan speed is not large, resulting in higher operating noise when the air conditioner is running at other fan speeds.

[0073] To address the aforementioned problems, this invention proposes an air conditioner, which can be an integrated air conditioner, a split-type air conditioner, or either an indoor unit or an outdoor unit within a split-type air conditioner. It is understood that the operating noise of the indoor unit, being located indoors, significantly impacts the user experience. Therefore, in this embodiment, an indoor unit is used as an example for explanation. It should be noted that the air conditioner provided by this invention is not limited to indoor units. Specifically, in this embodiment, the specific form of the indoor unit is not limited; for example, it can be a wall-mounted indoor unit, a cabinet-type indoor unit, or a ducted indoor unit, etc.

[0074] Figures 1 to 3 This diagram illustrates the structure of an embodiment of the air conditioner indoor unit 100 provided by the present invention. It should be noted that the descriptions of orientation and direction in this embodiment apply only to the state of the air conditioner indoor unit 100 during normal use, and do not include the state of the air conditioner indoor unit 100 during installation, transportation, etc. In this embodiment, the up-down direction refers to a direction approximately parallel to the direction of gravity, but with an angle not exceeding 90 degrees; the horizontal direction refers to a direction perpendicular to gravity; and the front-back direction refers to a direction approximately parallel to the horizontal direction, but with a certain angle between it and the horizontal direction, and the angle not exceeding 90 degrees.

[0075] In this embodiment, the indoor unit 100 of the air conditioner includes a housing 10, a fan wheel, and a duct switching plate 20. The housing 10 forms a duct 14, the fan wheel 10 is disposed in the duct 14, and the duct switching plate 20 constitutes part of the duct wall of the duct 14. The duct switching plate 20 is disposed on the periphery of the fan wheel and is movably disposed relative to the fan wheel in the radial direction of the fan wheel to adjust the noise level of the indoor unit 100 of the air conditioner.

[0076] In this embodiment, the specific material and shape of the housing 10 are not limited. Specifically, the housing 10 is generally made of engineering plastic to protect components such as the fan and heat exchanger 50 in the indoor air conditioning unit 100 and to support the indoor air conditioning unit 100. The specific shape of the housing 10 is set according to the specific type of the indoor air conditioning unit 100 and the distribution of its internal components. Taking a cabinet-type indoor air conditioning unit 100 as an example, the housing 10 is generally cylindrical in the vertical direction, and the indoor air conditioning unit 100 is supported on the ground by a chassis located at the bottom of the housing 10. In this embodiment, the indoor air conditioning unit 100 is a wall-mounted indoor air conditioning unit 100. The housing 10 extends approximately horizontally, and the rear side of the housing 10 serves as the mounting side 60 for installation and fixation to a wall or other building structure to support the indoor air conditioning unit 100.

[0077] Furthermore, the air duct 14 is formed within the housing 10, and the air duct 14 is used for heat exchange. The air duct 14 refers to a channel for the flow of heat exchange airflow, and the air duct 14 has an air duct wall that surrounds and forms the air duct 14. The air duct wall can be integrally formed with the housing 10 or separately formed from the housing 10, and can be composed of multiple separate sections. The specific structure and shape of the air duct 14 are not limited. It is understood that a fan assembly and a heat exchanger 50 should be provided within the air duct 14. The fan assembly is used to drive indoor air to flow into the air duct 14 from the air inlet 13 and flow along the air duct 14 into the room. The heat exchanger 50 is used to exchange heat with the flowing airflow. The heat exchanger 50 can be set as an evaporator or a condenser according to the heat exchange mode of the indoor air conditioning unit 100. The specific structure of the fan assembly and the heat exchanger 50 and their placement in the air duct 14 are not limited. In this embodiment, the fan assembly includes the impeller. The impeller can specifically be an axial flow impeller, a centrifugal impeller, or a cross-flow impeller 30, etc. As long as the radial distance between the duct wall and the impeller affects the operating noise level of the fan assembly, it is within the protection scope of this invention. In the following description, a cross-flow impeller 30 commonly used in the indoor unit 100 of the air conditioner will be used as an example.

[0078] In this embodiment, please refer to Figures 1 to 4 The air duct switching plate 20 constitutes part of the air duct wall of the air duct 14. The air duct switching plate 20 is disposed on the periphery of the cross-flow fan 30 and is movably arranged relative to the cross-flow fan 30 in its radial direction. It should be noted that the specific shape and movement of the air duct switching plate 20 are not limited, as long as it is located on the periphery of the cross-flow fan 30 and the distance t between it and the cross-flow fan 30 changes with the movement of the air duct switching plate 20. Figure 1 As shown, the dashed line of the air duct switching plate 20 indicates a specific position of the air duct switching plate 20 in the active stroke, and the solid line of the air duct switching plate 20 indicates another specific position of the air duct switching plate 20 in the active stroke. In this embodiment, the distance t between the air duct switching plate 20 and the cross-flow fan wheel 30 is specifically the minimum distance t between the closest point of the air duct switching plate 20 and the cross-flow fan wheel and the outer periphery of the cross-flow fan wheel 30.

[0079] It is known to those skilled in the art that the distance t between the duct wall and the cross-flow fan 30 affects the operating noise level of the indoor air conditioning unit 100, and the fan noise ratio of the indoor air conditioning unit 100 changes with the distance t. That is, under different airflow conditions, the optimal distance t corresponding to the minimum operating noise of the indoor air conditioning unit 100 is not constant, nor does it change linearly. Specifically, please refer to... Figure 5 , Figure 5The diagram illustrates the relationship between the airflow-to-noise ratio of the indoor air conditioning unit 100 and the minimum distance t between the duct switching plate 20 and the outer periphery of the cross-flow fan 30 in one embodiment. As can be seen from the diagram, in this embodiment, when the distance t is less than 5 mm, the airflow-to-noise ratio of the indoor air conditioning unit 100 increases with increasing distance t; conversely, when the distance t is greater than 5 mm, the airflow-to-noise ratio of the indoor air conditioning unit 100 decreases with increasing distance t. Therefore, if it is desired that the indoor air conditioning unit 100 has low operating noise at different airflow rates, the value of the distance t can be determined based on the case where the operating noise is lowest at that airflow rate, and the optimal matching position of the duct wall can be determined based on the value of the distance t. That is, at different airflow levels (i.e., when the indoor air conditioning unit 100 is venting air at different airflow rates), the duct switching plate 20 constituting the duct wall has different matching positions, which can result in lower operating noise for the indoor air conditioning unit 100 at those airflow levels.

[0080] In this embodiment, since the air duct switching plate 20 is located on the periphery of the impeller and is movably arranged relative to the cross-flow impeller 30 in the radial direction, the radial distance t between the air duct switching plate 20 and the cross-flow impeller 30 changes with the movement of the air duct switching plate. When the indoor unit 100 of the air conditioner is working under different operating conditions, the air duct switching plate 20 can be moved to a matching position with a reasonable distance between it and the cross-flow impeller 30, so that the operating noise value of the indoor unit 100 of the air conditioner is relatively low. The indoor unit 100 of the air conditioner provided in this embodiment can more accurately adjust the operating noise of the indoor unit 100 of the air conditioner by controlling the movement of the air duct switching plate 20, so that the noise value of the indoor unit 100 of the air conditioner is relatively low when working under different operating conditions, and the user experience is more comfortable.

[0081] In one embodiment, please refer to Figure 1 The air duct switching plate 20 is arranged in an arc-shaped plate that curves away from the cross-flow fan 30. In this embodiment, the air duct switching plate 20 is curved to conform to the shape of a conventional cross-flow air duct 14. The air duct switching plate 20 cooperates with other air duct walls within the housing to jointly form a cross-flow air duct 14 with a shape suitable for the cross-flow fan 30, guiding airflow from the indoor air inlet to the outdoor air outlet, reducing wind resistance and increasing air volume. Preferably, as Figure 1As shown, the heat exchanger 50 is also arranged in an arc-shaped plate curved away from the cross-flow fan 30. The air duct switching plate 20 and the heat exchanger 50 are respectively located on both sides of the cross-flow fan 30. This provides sufficient space within the air duct 14 to accommodate the heat exchanger 50, increases the heat exchange area of ​​the heat exchanger 50, and improves heat exchange efficiency. Based on the typical size and airflow requirements of an indoor air conditioning unit 100, the minimum distance t between the air duct switching plate 20 and the outer periphery of the cross-flow fan 30 is preferably greater than or equal to 3mm and less than or equal to 7mm. This is to meet the noise adjustment requirements of the indoor air conditioning unit 100 under different airflow conditions.

[0082] For further information, please refer to [link / reference]. Figures 1 to 3 The air duct switching plate 20 is rotatably arranged around a rotating shaft 21, which is arranged side by side with the rotating shaft 31 of the cross-flow fan 30. In this embodiment, the air duct switching plate 20 adjusts the distance between itself and the cross-flow fan 30 by swinging. The structure is simple and reliable, with a short stroke and small required space. It also conforms to the conventional cross-flow air duct shape, resulting in low internal resistance and high air delivery efficiency in the air duct 14.

[0083] In a conventional 100' air conditioner indoor unit, please refer to Figure 6 and Figure 7 The indoor unit 100' of the air conditioner has only one air outlet. Taking the wall-mounted indoor unit 100' as an example, the indoor unit 100' has an air inlet 11' and an air outlet 12', as well as a heat exchange duct connecting the air inlet 11' and the air outlet 12'. The heat exchange duct is equipped with a heat exchanger 20' and a cross-flow fan 30'. Whether in cooling mode or heating mode, indoor air flows in from the air inlet 11' on the upper side of the indoor unit 100' and from the air outlet 12' on the lower side. The air outlet direction is adjusted only by the air guide plate 10' located at the air outlet.

[0084] However, the airflow direction adjustment capability of the air guide plate 10' is limited. For example, in cooling mode, as shown in Figure 6, the air guide plate 10' is generally in a horizontal position, causing the low-temperature airflow to be delivered in a roughly horizontal direction, preventing cold air from blowing directly into the room. However, due to the setting of the air guide plate 10', the width of the air outlet 12' is reduced, resulting in a large decrease in airflow and a short air delivery distance. At this time, the indoor heat exchange airflow circulation effect is as follows: Figure 11 As shown in the figure, the outer box represents the room boundary. The indoor unit 100' of the air conditioner is installed on the upper part of one side wall of the room. The heat exchange airflow sent out from the air outlet 12' has a small air delivery distance. After being sent out, it is easy to be re-inhaled into the heat exchange air duct, causing airflow short circuit. Some of the heat exchange airflow only circulates in a small area in the upper part of the room and cannot diffuse to the entire room, affecting the overall cooling of the room and causing uneven temperature distribution inside the room.

[0085] In heating mode, please refer to Figure 7 The air guide plate 10' is generally adjusted to extend downwards. However, due to the internal air duct structure of the indoor unit 100', the actual air outlet 12' generally has a small angle with the horizontal direction. This means the air guide direction of the air guide plate 10' differs significantly from the airflow direction of the outlet 12' itself. Therefore, it cannot push the hot air downwards. Furthermore, the extension length of the air guide plate 10' is limited, causing the hot air to quickly rise after traveling a certain distance from the air guide plate 10'. At this time, the indoor heat exchange airflow circulation effect is as follows: Figure 12 As shown in the diagram, the outer box represents the room boundary. The indoor unit 100' of the air conditioner is installed on the upper part of one side wall of the room. The heat exchange airflow sent out from the air outlet 12' rises quickly after being sent out and returns to the upper air inlet 11', where it is drawn into the heat exchange air duct. This causes some of the heat exchange airflow to circulate only in a small area at the top of the room and cannot diffuse to the entire room. As a result, the heat stratification phenomenon inside the room is obvious, and people feel hot in the head and cold in the feet, making the user experience uncomfortable.

[0086] To address the aforementioned issues, in one embodiment, please refer to... Figures 1 to 4 The housing 10 has an air inlet 13, a first air outlet 11, and a second air outlet 12. The air inlet 13, the first air outlet 11, and the second air outlet 12 are separated and connected to the air duct 14, which includes the air inlet 13, the first air outlet 11, and the second air outlet 12 located below the first air outlet 11. The air duct 14 includes an air inlet section 140 adjacent to the air inlet 13, a first air outlet section 141 adjacent to the first air outlet 11, and a second air outlet section 142 adjacent to the second air outlet 12. The air duct switching plate 20 is movably disposed on the housing and has a first working position and a second working position during its movement. In the first working position, the air inlet section 140 is connected to the first air outlet section 141, and in the second working position, the air inlet section 140 is connected to the second air outlet section 142.

[0087] The air duct 14 includes an air inlet section 140 adjacent to the air inlet 13, a first air outlet section 141 adjacent to the first air outlet 11, and a second air outlet section 142 adjacent to the second air outlet 12. The air inlet section 140 is specifically located on the air outlet side of the air inlet 13 and is disposed adjacent to the air inlet 13. The first air outlet section 141 is specifically located on the air inlet side of the first air outlet 11 and is disposed adjacent to the first air outlet 11. The second air outlet section 142 is specifically located on the air inlet side of the second air outlet 12 and is disposed adjacent to the second air outlet 12.

[0088] Figure 1The diagram shows the structure of the indoor unit 100 of the air conditioner in the off state. As shown, the air duct switching plate 20 is movably disposed on the housing 10, having a first working position and a second working position to switch the shape of the air duct 14. In the first working position, the air inlet section 140 is connected to the first air outlet section 141, and in the second working position, the air inlet section 140 is connected to the second air outlet section 142. In this embodiment, the first air outlet 11 is located above the second air outlet 12, and the internal shape of the air duct 14 is adjusted by the movement of the air duct switching plate 20, no longer relying on or only relying on the air guide plate to adjust the airflow direction. It should be noted that the first working position and the second working position do not represent the air duct switching plate 20 being located in a specific position, but rather represent the position corresponding to a certain segment of the movement stroke of the air duct switching plate 20, that is, it can include multiple specific positions.

[0089] Thus, when the indoor unit 100 of the air conditioner is in cooling mode, please refer to... Figure 2 The air inlet section 140 is connected to the first air outlet section 141. When the fan is working, the driven airflow flows from the air inlet 13 into the air duct 14, is cooled by the heat exchanger 50, and is then sent out from the first air outlet 11 located above. At this time, the indoor heat exchange airflow circulation effect is as follows: Figure 12 As shown in the diagram, the outer frame represents the room boundary. The indoor air conditioner unit 100 is installed on the upper part of one side wall of the room. Because the shape of the air duct 14 matches the orientation of the first air outlet 11, the heat exchange airflow delivered from the air outlet is basically delivered horizontally forward, preventing the cold air from blowing directly on the human body. Furthermore, the first air outlet 11 is not obstructed by the air guide plate, thus allowing for a longer air delivery distance. This enables the heat exchange airflow to circulate over a wider area, improving its distribution within the room, resulting in a more uniform temperature distribution and greater comfort for the human body.

[0090] When the indoor unit 100 of the air conditioner is in heating mode, please refer to... Figure 3 The air inlet section 140 is connected to the second air outlet section 142. When the fan is working, the driven airflow flows from the air inlet 13 into the air duct 14, is cooled by the heat exchanger 50, and is then sent out from the lower second air outlet 12. At this time, the indoor heat exchange airflow circulation effect is as follows: Figure 13As shown in the diagram, the outer frame represents the room boundary. The indoor unit 100 of the air conditioner is installed on the upper part of one side wall of the room. The heat exchange airflow delivered from the second air outlet 12 is directed downwards because the shape of the air duct 14 is adapted to the orientation of the second air outlet 12. The direction of the heat exchange airflow no longer relies solely on the guidance of the air guide plate, but is adjusted by the shape of the air duct 14 itself. The air delivery distance is longer, and the hot air does not rise quickly after being delivered, but first diffuses downwards to the bottom of the room before rising, resulting in a wider diffusion range. This improves the heat stratification phenomenon inside the room and makes people feel more comfortable.

[0091] It should be noted that in this embodiment, the impeller is a bidirectional cross-flow impeller 30. In this embodiment, the direction in which the cross-flow impeller 30 rotates around the axis 31 to one side is forward, and the direction in which it rotates around the axis 31 to the other side is reverse. By adjusting the rotation direction of the cross-flow impeller 30, the positions of the air inlet side and the air outlet side of the cross-flow impeller 30 can be interchanged. Thus, when the cross-flow impeller 30 rotates forward, the first air outlet section 141 is on the air outlet side of the cross-flow impeller 30, and the second air outlet section 142 and the air inlet 13 are on the air inlet side of the cross-flow impeller 30. When the air conditioner is in cooling mode, it controls the cross-flow impeller 30 to rotate forward, so that the low-temperature airflow is sent out from the first air outlet 11 located above. Then, the cold air sinks, and the cold air does not blow directly on the human body, resulting in a uniform indoor temperature distribution and a comfortable feeling for the human body. When the dual cross-flow fan 30 reverses, the second air outlet 12 is on the air outlet side of the cross-flow fan 30, and the first air outlet 11 and the air inlet 13 are on the air inlet side of the cross-flow fan 30. When the air conditioner is in heating mode, it controls the cross-flow fan 30 to reverse, so that the high-temperature airflow is sent out from the second air outlet 12 located below, and then the hot air rises and does not float in the upper part of the room, avoiding the phenomenon of heat stratification, so that the indoor temperature is evenly distributed and the human body feels comfortable.

[0092] The blades of the cross-flow fan 30 require special design; for details, please refer to [link / reference needed]. Figures 8 to 10 In one embodiment, the cross-flow impeller 30 has a first blade section 32 and a second blade section 33 alternately distributed in the axial direction. The first blade section 32 and the second blade section 33 have different blade shapes, such that when the cross-flow impeller 30 rotates clockwise, the airflow driven by the cross-flow impeller 30 is delivered radially from the first blade section 32, and when the cross-flow impeller 30 rotates counterclockwise, the airflow driven by the cross-flow impeller 30 is delivered radially from the second blade section 33. For the specific blade shapes of the first blade section 32 and the second blade section 33, please refer to... Figure 9 and Figure 10It can be seen that the blade profile of the first blade section 32 has the same rotation direction as the forward rotation direction, and the blade profile of the second blade section 33 has the same rotation direction as the reverse rotation direction. Thus, the cross-flow impeller 30 provided in this embodiment can achieve different airflow directions in both forward and reverse rotation states. It is understood that the specific structure of the cross-flow impeller 30 can also have other implementations. For example, the cross-flow impeller 30 can be equipped with movable blades and a blade driving device to drive the blades. The position of the blades can be adjusted according to the rotation direction of the cross-flow impeller 30. Specifically, the blade driving device is used to adaptively drive and adjust the blades, so that the blades move to a position with the same rotation direction as the current rotation direction. Thus, the cross-flow impeller 30 provided in this embodiment can achieve different airflow directions in both forward and reverse rotation states.

[0093] In one embodiment, please refer to Figures 1 to 3 The air inlet 13 is located vertically between the first air outlet 11 and the second air outlet 12. The air duct switching plate 20 and the air inlet 13 are arranged opposite each other on both sides of the cross-flow fan 20. This arrangement makes the air outlets more reasonable. When the indoor unit 100 is running, the indoor airflow returns from the air inlet 13 located in the middle of the casing 10, and then, depending on the cooling or heating mode and the corresponding working position of the air duct switching plate 20, is guided to the first air outlet section 141 or the second air outlet section 142, and delivered from the first air outlet 11 located above or the second air outlet 12 located below. The internal components of the indoor unit 100 are correspondingly arranged, resulting in a more compact structure and a more aesthetically pleasing appearance.

[0094] In one embodiment, please refer to Figure 1 and Figure 4 , Figure 4 The dashed line indicates the shape of the air duct switching plate 20 in the first working position, and the solid line indicates the shape of the air duct switching plate 20 in the second working position. The air duct switching plate 20 is rotatably mounted on the housing 10, and the rotation shaft 21 of the air duct switching plate 20 is arranged side by side with the rotation shaft 31 of the cross-flow fan 30. The air duct switching plate 20 has a first rotating end 22 and a second rotating end 23 arranged opposite to each other on both sides of the rotation shaft 21. The first rotating end 22 is close to the first air outlet section 141, and the second rotating end 23 is close to the second air outlet section 142.

[0095] Please refer to the following: Figure 2 and Figure 4In cooling mode, the air duct switching plate 20 switches to the first working position, with the first rotating end 22 moving away from the cross-flow fan 30 and the second rotating end 23 moving closer to the cross-flow fan 30. This increases the air inlet of the first air outlet section 141 and decreases the air inlet of the second air outlet section 142, connecting the air inlet section 140 and the first air outlet section 141 to form an upper air outlet duct 14. Thus, when the cross-flow fan 30 is working, the indoor airflow passes through the air inlet 13, undergoes heat exchange and cooling via the heat exchanger 50, flows to the first air outlet section 141, and is discharged from the upper first air outlet 11. The low-temperature gas sinks, preventing the cold air from blowing directly onto the human body, resulting in a uniform indoor temperature distribution and comfortable comfort. Please refer to the structural diagram. Figure 3 and Figure 4 In heating mode, the air duct switching plate 20 switches to the second working position, with the second rotating end 23 moving away from the cross-flow fan 30 and the first rotating end 22 moving closer to the cross-flow fan 30. This reduces the air inlet of the first air outlet section 141 and increases the air inlet of the second air outlet section 142, connecting the air inlet section 140 and the second air outlet section 142 to form a lower air outlet duct 14. Thus, when the cross-flow fan 30 is working, the indoor airflow passes through the air inlet 13, undergoes heat exchange and heating via the heat exchanger 50, flows to the second air outlet section 142, and is discharged from the lower second air outlet 12. The rising of hot air avoids stratification during heating, resulting in a uniform indoor temperature distribution and comfortable comfort for the human body.

[0096] In this embodiment, the air duct switching plate 20 switches between the first working position and the second working position through a seesaw-like rotation action. The movement path is simple and the stroke is small. The structure is simple and reliable, easy to manufacture and assemble, and has low production cost.

[0097] Based on the above embodiments, please continue to refer to 1 to 2020. Figure 3 The housing 10 has a mounting side 60 and a front side located in front of the mounting side 60. The air inlet 13 is located on the front side of the housing 10 and is positioned vertically between the first air outlet 11 and the second air outlet 12. This arrangement makes the air outlets more reasonable. When the indoor unit 100 is running, the indoor airflow returns from the air inlet 13 located in the middle of the front side of the housing 10, and then, depending on the cooling or heating mode and the corresponding working position of the air duct switching plate 20, is guided to the first air outlet section 141 or the second air outlet section 142, and is delivered from the first air outlet 11 located above or the second air outlet 12 located below. The internal components of the indoor unit 100 are correspondingly arranged, resulting in a more compact structure and a more aesthetically pleasing appearance.

[0098] Based on the previous embodiment, please continue to refer to... Figures 1 to 3The front side of the housing 10 is provided with a panel 40 extending vertically. The panel 40 is closable at the air inlet 13. In the open state, the panel 40 has a first open position where the upper end of the panel 40 is rotatably connected to the housing 10 and the lower end of the panel 40 is separated from the housing 10, and a second open position where the lower end of the panel 40 is rotatably connected to the housing 10 and the upper end of the panel 40 is separated from the housing 10. Figure 2 As shown, in the first open position, the panel 40 forms a lower air intake channel with an open bottom between the panel 40 and the air inlet 13. This allows airflow to flow from the gap between the panel 40 and the lower side of the housing 10, upwards towards the air inlet 13, and then towards the air intake section 140. The actual air intake position is far from the first air outlet 11, and the air intake direction is downwards to prevent the low-temperature airflow from the first air outlet 11 from directly flowing towards the air inlet 13, thus avoiding airflow short-circuiting. Figure 3 As shown, in the second open position, the panel 40 forms an upper air intake channel with an open top between the panel 40 and the air inlet 13. This allows airflow to flow from the gap between the panel 40 and the upper side of the housing 10, downwards towards the air inlet 13, and then towards the air intake section 140. The actual air intake position is far from the second air outlet 12, and the air intake direction is upwards, preventing the high-temperature airflow from the second air outlet from directly flowing towards the air inlet 13, thus avoiding airflow short-circuiting.

[0099] In this embodiment, when the indoor unit 100 of the air conditioner is in cooling mode, the air duct switching plate 20 switches to the first working position, forming an upper air outlet duct 14, and the panel 40 switches to the first open position. At this time, the indoor airflow flows from the lower side of the casing 10 along the gap formed between the casing 10 and the panel 40 from bottom to top to the air inlet section 140. After being cooled by heat exchanger 50, it is sent out from the first air outlet 11 through the upper air outlet duct 14. The first air outlet 11 is located at the top, and the extension direction of the first air outlet bottom shell 101 is forward and upward, so that the low-temperature airflow is sent forward and upward into the room, sinks in the room, and the cold air does not blow directly on the human body. The indoor air temperature distribution is uniform, and the human body feels comfortable. The indoor airflow enters from the lower side and exits from the upper side, with a large circulation range, good indoor air circulation, and uniform temperature distribution.

[0100] In heating mode, the air duct switching plate 20 of the indoor unit 100 switches to the second working position, forming a downward air outlet duct 14, and the panel 40 switches to the second open position. At this time, indoor airflow flows from the upper side of the casing 10 along the gap between the casing 10 and the panel 40 downwards to the air inlet section 140. After being heated by the heat exchanger 50, it is then discharged from the second air outlet 12 through the downward air outlet duct 14. The second air outlet 12 is located at the top, and the downward air outlet duct 14 extends downwards, allowing the high-temperature airflow to be directed downwards into the room. The air rises within the room, preventing the hot air from directly blowing onto the human body, thus avoiding heat stratification. This results in a uniform indoor air temperature distribution and comfortable comfort. The indoor airflow enters from the upper side and exits from the lower side, resulting in a large circulation range, good indoor air circulation, and uniform temperature distribution.

[0101] Preferably, the opening degree of the panel 40 in the first open position and the second open position is adjustable, specifically, this can be achieved by setting an adjustable hinge structure. In this embodiment, the air outlet speed of the indoor unit 100 can also be adjusted by adjusting the opening degree of the panel 40. It can be understood that the larger the opening degree of the panel 40, the larger the air intake at the air inlet 13, resulting in a larger actual heat exchange air volume of the indoor unit 100, and at the same time, the noise generated by the indoor unit 100 is also greater. Generally speaking, when the indoor unit 100 is first turned on, in order to achieve rapid cooling or heating, the panel 40 needs to be opened to the maximum opening degree. When the indoor temperature reaches or approaches the preset target temperature value, the opening degree of the panel 40 can be appropriately reduced to reduce noise. The appropriate opening degree of the panel 40 is selected based on factors such as maintaining a constant indoor temperature, energy saving, and indoor noise control.

[0102] In one embodiment, please refer to Figures 1 to 3 The housing 10 is further provided with a first cover plate 51 and a second cover plate 52. The first cover plate 51 is closable at the first air outlet 11, and the second cover plate 52 is closable at the second air outlet 12. In this embodiment, by controlling the movement of the first cover plate 51 and the second cover plate 52, the opening and closing of the first air outlet 11 and the second air outlet 12 can be realized. Furthermore, by controlling the opening degree of the first cover plate 51 or the second cover plate 52, the air supply direction of the indoor unit 100 in cooling mode or heating mode can also be controlled.

[0103] Specifically, in cooling mode, please refer to Figure 2When the air duct switching plate 20 is in the first working position, the first cover plate 51 opens the first air outlet 11, and the second cover plate 52 closes the second air outlet 12. Thus, in cooling mode, this prevents some airflow from entering or exiting the air duct 14 through the second air outlet 12, thus affecting the heat exchange airflow of the indoor unit 100. In heating mode, please refer to... Figure 3 When the air duct switching plate 20 is in the second working position, the first cover plate 51 closes the first air outlet 11, and the second cover plate 52 opens the second air outlet 12. Thus, in heating mode, this prevents some airflow from entering or exiting the air duct 14 from the first air outlet 11, thereby affecting the heat exchange airflow of the indoor unit 100.

[0104] In the previous embodiment, please refer to Figure 2 and Figure 3 The housing 10 has a mounting side 60 and a front side located in front of the mounting side 60. When the first air outlet 11 is opened, the first cover plate 51 extends forward and upward from the first air outlet 11. When the second air outlet 12 is opened, the second cover plate 52 extends forward and downward from the second air outlet 12. Thus, in cooling mode, when the first air outlet 11 is opened, the heat exchange airflow is guided forward and upward by the first cover plate 51, ensuring the airflow is essentially horizontal and not directly blowing on the body. This extends the airflow distance and allows the heat exchange airflow to circulate over a wider area, improving the distribution within the room and resulting in a more uniform temperature distribution and greater comfort for the human body.

[0105] When the second air outlet 12 is open in heating mode, the heat exchange airflow is guided downwards by the second cover plate 52, resulting in the airflow being primarily directed downwards. This allows the heat exchange airflow to travel a greater distance, and the hot air, after being delivered, does not rise quickly but first diffuses downwards to the bottom of the room before rising, resulting in a wider diffusion range. This improves the stratification of heating within the room, making the human body feel more comfortable.

[0106] The following section describes the beneficial effects of the air conditioner indoor unit 100 in this embodiment, using the heat exchange airflow circulation effect during operation as an example. Please refer to the following references. Figure 13 and 14 In the diagram, the outer box represents the room boundary, and the arrows indicate the direction and range of the heat exchange airflow circulation. The indoor air conditioner unit 100 is a wall-mounted indoor air conditioner unit, which is installed on the upper part of one side wall of the room.

[0107] Figure 13 and Figure 14 The diagrams show the heat exchange airflow circulation in cooling and heating modes of an embodiment of the air conditioner indoor unit provided by the present invention. Figure 13 As shown, in cooling mode, the heat exchange airflow is sent into the room from the first air outlet 11 in a roughly horizontal direction, and then returns from bottom to top to the lower end of the indoor unit 100. The airflow travels along the ceiling to the far end of the room, then flows along the ceiling, slowly descends to the floor upon reaching the opposite wall, and finally enters from the bottom of the air conditioner, completing a large airflow circulation. This not only prevents cold air from blowing in, but also circulates the heat exchange airflow throughout the room, resulting in better room temperature uniformity and greatly improving comfort. Figure 14 As shown, in heating mode, the heat exchange airflow is sent downwards from the second air outlet 12 in a roughly vertical direction into the room, and then returns upwards to the upper part of the indoor unit 100 of the air conditioner. The heat exchange airflow is sent vertically along the wall to the floor, then flows along the floor, and slowly rises to the top of the room when it reaches the opposite wall. Finally, it is drawn into the air conditioner from the top of the room, completing a large circulation of heat exchange airflow. This not only prevents hot air from failing to sink, resulting in a hot head and cold feet, but also circulates the heat exchange airflow throughout the room, resulting in better room temperature uniformity, reducing heat stratification, effectively increasing foot temperature, and greatly improving comfort.

[0108] In one embodiment, please refer to Figure 1 and Figure 4 In the axial direction of the cross-flow fan 30, the angle C between the line connecting the rotating shaft 21 and the horizontal direction is greater than 0 degrees and less than 45 degrees. This arrangement determines the positional relationship between the air duct switching plate 20 and the cross-flow fan 30. Furthermore, the air duct switching plate 20 is rotatably arranged around the rotating shaft 31.

[0109] In this invention, the matching position of the air duct switching plate 20 is related to the air outlet speed of the air conditioner. Meanwhile, since the air duct 14 has different air duct resistance in cooling and heating modes, mainly due to the increased resistance of the air duct 14 caused by condensation in the heat exchanger 50 during cooling mode, the matching position of the air duct switching plate 20 is different for the same air outlet speed in cooling and heating modes. In this embodiment, the mapping relationship between the matching position of the air duct switching plate 20 and the air outlet speed of the air conditioner in cooling and heating modes is shown in Tables 1 and 2:

[0110] Table 1: Mapping Relationship between Matching Position and Air Output Speed ​​in Air Conditioner Cooling Mode

[0111]

[0112] Table 2: Mapping Relationship between Matching Position and Air Output Speed ​​in Air Conditioner Cooling and Heating Modes

[0113]

[0114] It should be noted that when the matching angle F in the table is 0, the angle between the tangent of the air duct switching plate 20 at the rotation axis 21 and the line connecting the rotation axis 21 and the rotation axis 31 is 108 degrees. All other matching angles F are relative to the matching angle 0. Positive matching angles F represent the angle by which the air duct switching plate 20 rotates clockwise from 0 degrees, and negative matching angles F represent the angle by which the air duct switching plate 20 rotates counterclockwise from 0 degrees.

[0115] As shown in Tables 1 and 2, the spacing t and / or matching angle F provide feedback on the matching position of the air duct switching plate 20. The air duct switching plate 20 has different airflow rates at different air outlet speeds, and corresponding to different matching positions. The matching position of the air duct switching plate 20 at a certain air outlet speed represents the minimum noise level at that air outlet speed when the air duct switching plate 20 is in that matching position. Furthermore, the cooling mode and heating mode have different spacing t to achieve the minimum noise level at different airflow speeds. Adjusting the air duct switching plate 20 according to the mapping relationship shown in Tables 1 and 2 can increase the airflow of the air conditioner by approximately 5%-15% at the same noise level, and the improvement is more significant at lower air outlet speeds.

[0116] Based on the specific embodiments of the air conditioner described above, embodiments of an air conditioner control device, method, and storage medium are proposed.

[0117] Reference Figure 15 , Figure 15 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of the present invention.

[0118] like Figure 15 As shown, the device may include: a processor 1001, such as a CPU; a communication bus 1002; a user interface 1003; a network interface 1004; and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and input units such as buttons; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface such as a Wi-Fi interface. The memory 1005 may be high-speed RAM or stable non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0119] Those skilled in the art will understand that Figure 15 The control device structure shown does not constitute a limitation on the control device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0120] like Figure 15 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a control method program for an air conditioner.

[0121] exist Figure 13 In the control device of the air conditioner shown, the network interface 1004 is mainly used to connect to the server and communicate data with the server; the user interface 1003 is mainly used to connect to the user terminal and communicate data with the terminal; the control device of the air conditioner of the present invention calls the control method program of the air conditioner stored in the memory 1005 through the processor 1001 and executes the control method of the air conditioner provided in the embodiment of the present invention.

[0122] Based on the above hardware structure, an embodiment of the control method for the air conditioner of the present invention is proposed.

[0123] Reference Figure 16 , Figure 16 This is a flowchart illustrating a first embodiment of the control method for an air conditioner according to the present invention. The control method for the air conditioner includes:

[0124] Step S1: Obtain the air outlet speed of the air conditioner.

[0125] It should be noted that the execution subject of this embodiment can be the control device of an air conditioner. The control device of the air conditioner is equipped with the control method program of the air conditioner. It can also be other devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment, an air conditioner is used as an example for explanation. The air conditioner can be equipped with a controller, and the controller is equipped with the control application program of the air conditioner. The air conditioner can be controlled according to the control application program of the air conditioner.

[0126] In practice, the air volume of different air outlet speeds can be preset by the air conditioner manufacturer, with each speed corresponding to a different air volume. In this embodiment, the air outlet speeds include ultra-high, high, medium, low, and silent speeds, with air volume decreasing sequentially. When the air conditioner is in use, the air outlet speed can be automatically set by the air conditioner based on environmental parameters, or it can be selected by the user.

[0127] Step S2: Control the air duct switching plate to move to the matching position according to the air outlet speed so that the noise value of the air conditioner is within the preset range.

[0128] It should be noted that the matching position of the air duct switching plate 20 at a certain air outlet speed represents the lower noise value at that air outlet speed when the air duct switching plate 20 is moved to that matching position. In specific implementation, the matching positions corresponding to different air outlet speeds can be preset by the manufacturer before the air conditioner leaves the factory. This ensures that the noise value of the air conditioner is within a preset range. The specific range of the preset range is not limited, but it refers to a noise value no greater than that of the air conditioner at that air outlet speed when the air duct switching plate 20 is fixedly set.

[0129] In this embodiment, since the air duct switching plate 20 and the fan wheel are movably arranged relative to each other, the radial distance t between the air duct switching plate 20 and the fan wheel changes with the movement of the air duct switching plate. When the air conditioner operates at different air outlet speeds, the air duct switching plate 20 can move to a matching position with a reasonable distance between itself and the fan wheel, resulting in a relatively low operating noise level for the air conditioner. The air conditioner provided in this embodiment can more precisely adjust the operating noise of the air conditioner by controlling the movement of the air duct switching plate 20, so that the noise level of the air conditioner is relatively reduced when operating at different air outlet speeds, resulting in a more comfortable user experience.

[0130] In one embodiment, such as Figure 17 As shown, a second embodiment of the control method for the air conditioner of the present invention is proposed based on the first embodiment.

[0131] In the second embodiment, step S1 includes:

[0132] Step S11: Obtain the heat exchange mode and air outlet speed of the air conditioner.

[0133] In this step, the heat exchange mode can be set by the user or preset by the manufacturer in the execution unit, allowing the execution unit to automatically determine the mode based on various factors such as current ambient temperature, humidity, and time. Specifically, the heat exchange mode includes a cooling mode or a heating mode. In cooling mode, the heat exchanger 50 acts as an evaporator; in heating mode, the heat exchanger 50 acts as a condenser. In practice, the airflow at different air outlet speeds can be preset by the air conditioner manufacturer, with different speeds corresponding to different airflow rates. In this embodiment, the air outlet speeds include ultra-high, high, medium, low, and silent speeds, with airflow decreasing sequentially. When the air conditioner is in use, the air outlet speed can be automatically set by the air conditioner based on environmental parameters or selected by the user.

[0134] Step S2 includes:

[0135] Step S21: Obtain the matching position of the air duct switching plate 20 according to the mapping relationship between the air outlet speed corresponding to the heat exchange mode and the matching position.

[0136] It should be noted that the matching position of the air duct switching plate 20 is related to the air outlet speed of the air conditioner. Furthermore, since the air duct 14 has different air duct resistance in cooling and heating modes, mainly due to the increased resistance of the air duct 14 caused by condensation in the heat exchanger 50 during cooling mode, the matching position of the air duct switching plate 20 is different for the same air outlet speed in cooling and heating modes. Specifically, the mapping relationship between the matching position of the air duct switching plate 20 and the air conditioner's different air outlet speeds in cooling and heating modes can be shown in Tables 1 and 2 above. It should be noted that the air duct switching plate 20 in this embodiment is not limited to a rotating installation; in other embodiments, the matching position of the air duct switching plate 20 under different heat exchange modes and air outlet speeds can also be set according to other methods set by the manufacturer.

[0137] Step S22: Control the air duct switching plate 20 to move to the matching position.

[0138] In practice, when the air conditioner is running in a certain heat exchange mode and air outlet speed, the air duct switching plate 20 can be controlled to move to the corresponding switching angle and / or the minimum distance t between the air duct switching plate 20 and the fan wheel can meet the distance t requirement in Table 1, according to Table 1 and Table 2 above.

[0139] In this embodiment, the matching position of the air duct switching plate 20 is determined based on two conditions: the heat exchange mode of the air conditioner and different air outlet speeds. Considering the difference in air duct resistance between the cooling and heating modes of the air duct 14, the control is more precise, resulting in lower operating noise of the air conditioner. This allows the air volume of the air conditioner to be increased by approximately 5%-15% at the same noise level, and the lower the air outlet speed, the more significant the improvement effect.

[0140] In one embodiment, such as Figure 18 As shown, a third embodiment of the control method for the air conditioner of the present invention is proposed based on the second embodiment.

[0141] In the third embodiment, step S21 includes:

[0142] Step S211: Obtain the matching angle F of the air duct switching plate 20 according to the mapping relationship between the air outlet speed and the matching angle F corresponding to the heat exchange mode.

[0143] In one embodiment, the mapping relationship between the matching position of the duct switching plate 20 and the air outlet speed of the air conditioner in cooling and heating modes can be shown in Tables 1 and 2 above. Specifically, the matching angle F of the duct switching plate 20 can be obtained according to the mapping relationship between the air outlet speed and the matching angle shown in Tables 1 and 2 above. In other embodiments, the matching position of the duct switching plate 20 under different heat exchange modes and air outlet speeds can also be set according to other methods set by the manufacturer.

[0144] Step S22 includes:

[0145] Step S221: Determine the target switching angle based on the difference between the current angle of the air duct switching plate 20 and the matching angle F.

[0146] In this step, the current angle can be one of the matching angles F, or it can be a value different from the matching angle F, but based on the same benchmark, the angle value that can be measured can reflect the actual rotation position of the air duct switching plate 20.

[0147] The difference between the current angle value and the matching angle F is the target switching angle. When the difference is positive, the air duct switching plate 20 can reach the matching angle F by rotating the target switching angle clockwise from the current angle. When the difference is negative, the air duct switching plate 20 can reach the matching angle F by rotating the target switching angle counterclockwise from the current angle.

[0148] Step S222: Control the air duct switching plate 20 to rotate through the target switching angle.

[0149] In this step, by controlling the air duct switching plate 20 to rotate through the target switching angle, the air duct switching plate 20 can be moved to the matching position.

[0150] In this embodiment, the matching position of the air duct switching plate 20 is determined based on two conditions: the heat exchange mode of the air conditioner and different air outlet speeds. Considering the difference in air duct resistance between cooling and heating modes, the control is more precise, resulting in lower operating noise from the air conditioner. Furthermore, based on the movement mode of the air duct switching plate 20, controlling its rotation through the target switching angle allows it to be switched to the corresponding matching position, making operation simple.

[0151] In one embodiment, a fourth embodiment of the control method for the air conditioner of the present invention is proposed based on the second or third embodiment.

[0152] In the fourth embodiment, step S11 is followed by:

[0153] When the heat exchange mode is cooling mode, control the panel 40 to switch to the first open position;

[0154] When the heat exchange mode is heating mode, control panel 40 to switch to the second open position.

[0155] In this embodiment, when the indoor unit 100 is in cooling mode, the air duct switching plate 20 switches to the first working position, forming an upper air outlet duct 14, and the panel 40 switches to the first open position. At this time, the indoor airflow flows from the lower side of the casing 10 along the gap formed between the casing 10 and the panel 40 from bottom to top to the air inlet section 140. After being cooled by heat exchanger 50, it is sent out from the first air outlet 11 through the upper air outlet duct 14. The first air outlet 11 is located at the top, and the extension direction of the first air outlet bottom shell 101 is forward and upward, so that the low-temperature airflow is sent forward and upward into the room, sinks in the room, and the cold air does not blow directly on the human body. The indoor air temperature is evenly distributed, and the human body feels comfortable. The indoor airflow enters from the lower side and exits from the upper side, with a large circulation range, good indoor air circulation, and even temperature distribution. When the indoor unit 100 is in heating mode, the air duct switching plate 20 switches to the second working position, forming a lower air outlet duct 14, and the panel 40 switches to the second open position. At this time, the indoor airflow flows from the upper side of the casing 10 along the gap formed between the casing 10 and the panel 40 downwards to the air inlet section 140. After being heated by heat exchanger 50, it is sent out from the second air outlet 12 through the lower air outlet duct 14. The second air outlet 12 is located at the top, and the lower air outlet duct 14 extends downwards, so that the high-temperature airflow is sent downwards into the room, rises in the room, and the hot air does not blow directly on the human body, avoiding heat stratification. The indoor air temperature is evenly distributed, and the human body feels comfortable. The indoor airflow enters from the upper side and exits from the lower side, with a large circulation range, good indoor air circulation, and uniform temperature distribution.

[0156] In one embodiment, a fifth embodiment of the control method for the air conditioner of the present invention is proposed based on the second or third embodiment.

[0157] In the fifth embodiment, step S11 is followed by:

[0158] When the heat exchange mode is cooling mode, the first cover plate 51 is opened and the second cover plate 52 is closed.

[0159] When the heat exchange mode is heating mode, the first cover plate 51 is closed and the second cover plate 52 is opened.

[0160] In this embodiment, in cooling mode, please refer to... Figure 2When the air duct switching plate 20 is in the first working position, the first cover plate 51 opens the first air outlet 11, and the second cover plate 52 closes the second air outlet 12. Thus, in cooling mode, this prevents some airflow from entering or exiting the air duct 14 through the second air outlet 12, thus affecting the heat exchange airflow of the indoor unit 100. In heating mode, please refer to... Figure 3 When the air duct switching plate 20 is in the second working position, the first cover plate 51 closes the first air outlet 11, and the second cover plate 52 opens the second air outlet 12. Thus, in heating mode, this prevents some airflow from entering or exiting the air duct 14 from the first air outlet 11, thereby affecting the heat exchange airflow of the indoor unit 100.

[0161] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises: a casing, which is formed with an air duct; a fan wheel, which is arranged in the air duct; and an air duct switching plate, which constitutes part of the air duct wall of the air duct, is arranged on the circumferential side of the fan wheel, and is arranged to be relatively movable with the fan wheel in the radial direction of the fan wheel to adjust the spacing between the air duct switching plate and the fan wheel in the radial direction of the fan wheel. The fan wheel is a cross-flow fan wheel, and the air duct switching plate is arranged in the shape of an arc-shaped plate curved towards the side away from the cross-flow fan wheel. The air duct switching plate is rotatably arranged around a rotating shaft, and the rotating shaft is arranged side by side with the rotating shaft of the cross-flow fan wheel. The casing is formed with an air inlet, a first air outlet, and a second air outlet located below the first air outlet, which are connected with the air duct. The air duct comprises an air inlet section adjacent to the air inlet, a first air outlet section adjacent to the first air outlet, and a second air outlet section adjacent to the second air outlet. The air duct switching plate has a first working position and a second working position in the movable stroke of the air duct switching plate. In the first working position, the air inlet section is connected with the first air outlet section. In the second working position, the air inlet section is connected with the second air outlet section. The air inlet is located between the first air outlet and the second air outlet in the up-down direction. The air duct switching plate and the air inlet are arranged in opposite positions on both sides of the cross-flow fan wheel. The air duct switching plate has a first rotating end and a second rotating end arranged in opposite positions on both sides of the rotating shaft. The first rotating end is close to the first air outlet section, and the second rotating end is close to the second air outlet section. In the first working position of the air duct switching plate, the first rotating end is away from the cross-flow fan wheel, and the second rotating end is close to the cross-flow fan wheel. In the second working position of the air duct switching plate, the first rotating end is close to the cross-flow fan wheel, and the second rotating end is away from the cross-flow fan wheel. The minimum spacing t between the air duct switching plate and the outer periphery of the fan wheel is greater than or equal to 3 mm and less than or equal to 7 mm.

2. The air conditioner of claim 1, wherein The casing has a mounting side and a front side located in front of the mounting side. The air inlet is arranged on the front side of the casing and located between the first air outlet and the second air outlet in the up-down direction.

3. The air conditioner according to any one of claims 1 to 2, wherein The front side of the casing is provided with a panel extending in the up-down direction. The panel is arranged to be openable and closable at the air inlet. In the open state, the panel has a first open position in which the upper end of the panel is rotatably connected with the casing and the lower end of the panel is separated from the casing, and a second open position in which the lower end of the panel is rotatably connected with the casing and the upper end of the panel is separated from the casing.

4. The air conditioner of claim 3, wherein The casing is further provided with a first cover plate and a second cover plate. The first cover plate is arranged to be openable and closable at the first air outlet, and the second cover plate is arranged to be openable and closable at the second air outlet.

5. The air conditioner according to any one of claims 1 to 2, wherein The control method of the air conditioner comprises:

6. A control method of an air conditioner, characterized by, acquiring the air outlet position of the air conditioner; controlling the air duct switching plate to move to a matching position according to the air outlet position, so that the noise value of the air conditioner is within a preset range. ​ 7. The control method of the air conditioner according to claim 6, wherein The step of obtaining the air outlet position of the air conditioner comprises: obtaining the heat exchange mode and the air outlet position of the air conditioner; The step of controlling the air duct switching plate to move to the matching position according to the air outlet position so that the noise value of the air conditioner is within the preset range comprises: obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching position; controlling the air duct switching plate to move to the matching position.

8. The control method of claim 7, wherein, The air duct switching plate is rotatably arranged on the cabinet; The step of obtaining the matching position of the air duct switching plate according to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching position comprises: obtaining the matching angle of the air duct switching plate according to the mapping relationship between the air outlet position corresponding to the heat exchange mode and the matching angle; The step of controlling the air duct switching plate to move to the matching position comprises: determining a target switching angle according to the difference between the current angle of the air duct switching plate and the matching angle; controlling the air duct switching plate to rotate through the target switching angle.

9. The control method of an air conditioner according to claim 7 or 8, characterized in that, The cabinet has a mounting side and a front side located in front of the mounting side, the air inlet is arranged on the front side of the cabinet and located between the first air outlet and the second air outlet in the up-down direction, the front side of the cabinet is provided with a panel extending in the up-down direction, the panel is openably arranged at the air inlet, and the panel has a first opening position in the opening state, in which the upper end of the panel is rotationally connected with the cabinet and the lower end of the panel is separated from the cabinet, and a second opening position, in which the lower end of the panel is rotationally connected with the cabinet and the upper end of the panel is separated from the cabinet; The step of obtaining the heat exchange mode and the air outlet position of the air conditioner comprises: when the heat exchange mode is the cooling mode, controlling the panel to switch to the first opening position; when the heat exchange mode is the heating mode, controlling the panel to switch to the second opening position.

10. The control method of an air conditioner according to claim 7 or 8, characterized in that, The cabinet is further provided with a first cover plate and a second cover plate, the first cover plate is openably arranged at the first air outlet, and the second cover plate is openably arranged at the second air outlet; The step of obtaining the heat exchange mode and the air outlet position of the air conditioner comprises: when the heat exchange mode is the cooling mode, controlling the first cover plate to open and the second cover plate to close; when the heat exchange mode is the heating mode, controlling the first cover plate to close and the second cover plate to open.

11. A control device characterized by comprising: comprise: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, and the air conditioner control program, when executed by the processor, implements the steps of the air conditioner control method according to any one of claims 6 to 10.

12. An air conditioner characterized by comprising: The air conditioner comprises the control device according to claim 11.

13. A storage medium, characterized by The storage medium stores an air conditioner control program, and the air conditioner control program, when executed by the processor, implements the steps of the air conditioner control method according to any one of claims 6 to 10.

Images