Lower air outlet frame assembly and ducted air conditioner

Abstract

The application relates to the technical field of air conditioning equipment, in particular to a lower air outlet frame assembly and a ducted air conditioner. The lower air outlet frame assembly comprises a mounting plate, a fixed support, a movable support, an air outlet fixed plate and an air outlet adjusting plate. The fixed support, the movable support and the air outlet fixed plate are sequentially arranged along a second direction and are arranged between two mounting plates. The movable support is detachably connected with the mounting plate to adjust the distance between the movable support and the fixed support. The air outlet adjusting plate is detachably connected with the fixed support and the movable support. The air outlet adjusting plate covers a channel formed by the mounting plate, the fixed support and the movable support. The air outlet adjusting plate is provided with a plurality of portions to adapt to different distances between the movable support and the fixed support. The application is beneficial to improving the insufficient adjustment of the traditional fixed lower air outlet under different floor heights and different installation conditions and reducing the possibility of air supply failure or excessive impact.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to a bottom air outlet frame assembly and a duct air conditioner. Background Technology

[0002] Currently, most ducted air conditioners use either side or bottom air outlets. However, with the continuous expansion of functionality, user demands for ducted air conditioners are also increasing. Current side-discharge ducted air conditioners suffer from poor room heating performance, large temperature differences between different areas of the room, and large blind spots in air delivery. Bottom-discharge ducted air conditioners, on the other hand, suffer from the problem of direct cold air blowing. Therefore, related technologies have developed alternative air delivery modes that allow switching between bottom and side air outlets, or dual air outlet modes that simultaneously supply both bottom and side air.

[0003] Typically, ducted air conditioning units have three fan speed settings: low, medium, and high. This results in three different airflow speeds at the downflow outlet. Assuming a fixed ceiling height and outlet angle, the downflow airflow can have various delivery distances, such as airflow farther from the floor, airflow closer to the floor, or airflow impacting the floor. However, because the size of the downflow outlet is fixed, the adjustability of the downflow distance is poor. Specifically, as the ceiling height and installation height of the ducted air conditioning unit change, it can easily lead to inadequate downflow or excessive impact. Summary of the Invention

[0004] This application provides a bottom-discharge frame assembly and a duct air conditioner to solve the technical problem of poor adjustability of the air delivery distance of the bottom-discharge air conditioner in practical applications.

[0005] In a first aspect, embodiments of this application provide a lower air outlet frame assembly, which includes a mounting plate, a fixed bracket, a movable bracket, an air outlet fixing plate, and an air outlet adjusting plate, wherein: Two mounting plates are provided and are arranged side by side facing each other in the first direction; The fixed bracket, the movable bracket, and the air vent fixing plate are all arranged sequentially along the second direction and are all disposed between the two mounting plates. The movable bracket is detachably fitted relative to the mounting plate to adjust the distance between the movable bracket and the fixed bracket. The air vent adjustment plate is detachably coupled with the fixed bracket and the movable bracket respectively. The air vent adjustment plate covers the channel formed by the mounting plate, the fixed bracket and the movable bracket. The air vent adjustment plate is provided with multiple vents to adapt to different spacings between the movable bracket and the fixed bracket.

[0006] Furthermore, the top of the fixed bracket has a first mounting surface, and the fixed bracket includes a positioning post protruding from the first mounting surface. The top of the movable bracket has a second mounting surface, and the movable bracket includes a buckle protruding from the second mounting surface. The air vent adjustment plate has a positioning hole that mates with the positioning post and a buckle mating hole that mates with the buckle.

[0007] Furthermore, along the direction from the fixed bracket to the air outlet fixing plate, the mounting plate is sequentially provided with a first mounting position, a second mounting position, and a third mounting position for mounting the movable bracket.

[0008] Furthermore, the movable bracket includes a horizontal section and a vertical section connected to each other, the air outlet adjustment plate cooperates with the horizontal section, and the air outlet frame assembly also includes a fixed air guide plate disposed between the two mounting plates. The fixed air guide plate is disposed along the inner edge of the air outlet fixing plate and is disposed opposite to the vertical section.

[0009] Furthermore, the lower air outlet frame assembly also includes a first air guide plate and a second air guide plate. The first air guide plate is rotatably mounted on the movable bracket, located below the vertical section, and the rotating end of the first air guide plate is close to the lower edge of the vertical section. The second air guide plate is rotatably mounted on the mounting plate, located below the fixed air guide plate, and the rotating end of the second air guide plate is close to the lower edge of the fixed air guide plate.

[0010] Furthermore, a limiting plate protruding upward from the first mounting surface is formed on the fixed bracket. The limiting plate is inclined relative to the first mounting surface, and the edge of the air outlet adjustment plate is matched and disposed in the angle area formed by the first mounting surface and the limiting plate.

[0011] Secondly, embodiments of this application provide a ductwork unit, which includes: The air outlet housing has a side air outlet on the side and a bottom air outlet on the bottom surface; The lower air outlet frame assembly provided in the first aspect of this application is disposed on the bottom plate of the air outlet housing, and the mounting plate, the air outlet fixing plate and the movable bracket together form the lower air outlet.

[0012] Furthermore, the fixed bracket has an inclined guide surface on the side away from the air outlet fixing plate, and the guide surface gradually extends upward along the direction that gradually approaches the air outlet fixing plate.

[0013] Furthermore, the duct unit also includes a water receiving tray, on the side of the water receiving tray facing the lower air outlet frame assembly, an upwardly inclined guide wall is formed, the guide wall being attached to the lower side of the guide surface.

[0014] Furthermore, the guide surface is recessed inside the fixed bracket to form a guide groove, the guide groove extends along the first direction, and the fixed bracket has a drainage channel that connects the guide groove and the water receiving tray.

[0015] Furthermore, the depth of the guide groove in the vertical direction is 1-2 mm, and the opening width of the guide groove on the guide surface is 1-2 mm.

[0016] Compared with the prior art, the technical solution provided in this application has the following advantages: the lower air outlet is no longer a single structure with a fixed size, but can be flexibly configured with different opening sizes by adjusting the installation position of the movable bracket and matching the corresponding air outlet adjustment plate. When the duct unit is installed at a high height or the downward air supply distance needs to be extended, the size of the lower air outlet can be adjusted by reducing the distance between the movable bracket and the air outlet fixing plate, making the downward air supply state more suitable for the target air supply range; when the installation height is low or the airflow impact needs to be reduced, the lower air outlet can be expanded accordingly by increasing the distance between the movable bracket and the air outlet fixing plate. This helps to improve the problem of insufficient adjustment capability of traditional fixed lower air outlets under different floor heights and installation conditions, and reduces the possibility of inadequate air supply or excessive impact. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 A three-dimensional structural diagram of the lower air outlet frame assembly provided in an embodiment of this application; Figure 2 for Figure 1 Enlarged view of a local structure in the image; Figure 3 A sectional view from a perspective of a lower air outlet frame assembly provided in an embodiment of this application; Figure 4 A three-dimensional structural diagram of the lower air outlet frame assembly provided in an embodiment of this application after removing the air outlet adjustment plate; Figure 5 for Figure 4 A magnified view of a portion of the image; Figure 6 A three-dimensional structural diagram of the air outlet adjustment plate in the lower air outlet frame assembly provided in an embodiment of this application; Figure 7 for Figure 6 A magnified view of a portion of the image; Figure 8 This is a cross-sectional view of the movable bracket in the lower air outlet frame assembly provided in an embodiment of this application when the bracket is in the second mounting position. Figure 9 A cross-sectional view of the movable bracket in the lower air outlet frame assembly provided in an embodiment of this application when the bracket is in the third mounting position; Figure 10 A cross-sectional view of the movable bracket in the lower air outlet frame assembly provided in an embodiment of this application when the bracket is in the first mounting position; Figure 11 A perspective view of the internal structure of the duct air conditioner without the lower air outlet frame assembly installed, as provided in the embodiments of this application. Figure 12 A three-dimensional schematic diagram of the internal structure of the air duct unit in the state of the lower air outlet frame assembly provided in the embodiment of this application; Figure 13 This is a schematic diagram of the side-discharge and remote air delivery state of the air outlet structure of the ducted air conditioner provided in an embodiment of this application; Figure 14 A schematic diagram of the air outlet structure of a ducted air conditioner in an embodiment of this application, showing the air outlet state below. Figure 15 A three-dimensional schematic diagram of the air outlet structure of a ducted air conditioner in the lower air outlet state according to an embodiment of this application; Figure 16 A three-dimensional schematic diagram of the air outlet structure of a ducted air conditioner in an embodiment of this application, showing the air outlet state on the side. Figure 17 This is a schematic diagram of the dual-outlet air outlet structure of a ducted air conditioner provided in an embodiment of this application; Figure 18 A three-dimensional schematic diagram of the air outlet structure of a ducted air conditioner in a dual-outlet state according to an embodiment of this application; Figure 19 A three-dimensional schematic diagram of the air outlet structure of a ducted air conditioner in a dual-outlet state, provided in another embodiment of this application; Figure 20 A perspective view of an upper arc-shaped baffle assembly provided in an embodiment of this application; Figure 21An assembly perspective view of the upper arc-shaped baffle assembly provided in an embodiment of this application; Figure 22 An assembly perspective view of the upper arc-shaped baffle assembly provided for another embodiment of this application; Figure 23 This is a flowchart of an air duct air supply control method provided in an embodiment of this application; Figure 24 A general logic diagram of the air outlet control method for a ducted air conditioner provided in an embodiment of this application; Figure label: 10. Air outlet casing; 110. Side air outlet; 120. Lower air outlet; 20. Upper arc-shaped baffle assembly; 210. Upper arc-shaped wind deflector; 2101. The first upper baffle protrudes; 2102. The second upper baffle protrudes; 2103. The inner side of the upper baffle protrudes; 2104. Longitudinal groove; 220. Upper windshield bracket; 30. Mid-arc baffle assembly; 310. Center windshield bracket; 320. Medium-arc wind deflector; 3201. Sliding buckle; 40. Bottom wind deflector; 50. Water tray; 510. Flow guide wall; 60. Lower air outlet frame assembly; 610. Mounting plate; 6101, First installation position; 6102, Second mounting position; 6103, Third installation position; 620. Fixed bracket; 6201, First mounting surface; 6202, Positioning Post; 6203, Limiting plate; 6204, Guide surface; 6205, flow guide channel; 630. Movable support frame; 6301, Second mounting surface; 6302, buckle; 6303, Horizontal section; 6304, Vertical segment; 640. Air vent fixing plate; 650. Air vent adjustment plate; 6501, Positioning hole; 6502, snap-fit ​​hole; 6503, wedge-shaped surface; 660. Fixed air guide plate; 670. First air guide plate; 680. Second air guide plate; 70. Heat exchanger side plate; 710. First sealing protrusion; 720. Second sealing protrusion; 730. Third sealing protrusion; 80. Heat exchanger. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0023] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0024] This application discloses a bottom-discharge frame assembly and a ducted air conditioner. The bottom-discharge frame assembly is a separate component of the ducted air conditioner, used to form the bottom air outlet of the ducted air conditioner. Of course, this bottom-discharge frame assembly can be applied to various other application scenarios for forming air outlets. This application uses the application of this bottom-discharge frame assembly in a ducted air conditioner as an example for illustrative explanation.

[0025] like Figure 1-10 As shown, the main structure of the lower air outlet frame assembly 60 includes a mounting plate 610, a fixed bracket 620, a movable bracket 630, an air outlet fixing plate 640, and an air outlet adjusting plate 650. Specifically: two mounting plates 610 are provided and arranged side-by-side facing each other in a first direction; the fixed bracket 620, the movable bracket 630, and the air outlet fixing plate 640 are arranged sequentially along a second direction and are all positioned between two mounting plates 610. The movable bracket 630 is detachably fitted relative to the mounting plate 610 to adjust the distance between the movable bracket 630 and the fixed bracket 620; the air outlet adjusting plate 650 is detachably fitted with both the fixed bracket 620 and the movable bracket 630, and covers the channel formed by the mounting plate 610, the fixed bracket 620, and the movable bracket 630. The air outlet adjusting plate 650 has multiple vents to accommodate different spacings between the movable bracket 630 and the fixed bracket 620. With the above configuration, the entire lower air outlet frame assembly 60 forms a multi-segment structure that unfolds along the second direction between the two mounting plates 610, providing an installation basis for adjusting the size of the lower air outlet 120 and switching the air outlet shape.

[0026] The movable bracket 630 is detachably fitted relative to the mounting plate 610 to adjust its installation position in the second direction. With the fixed bracket 620 and the air vent mounting plate 640 remaining in their positions relative to the mounting plate 610, the position of the movable bracket 630 can be switched in the second direction, thereby changing the distance between the movable bracket 630 and the fixed bracket 620. Simultaneously, the distance between the movable bracket 630 and the air vent mounting plate 640 changes in the opposite direction; that is, when the distance on one side increases, the distance on the other side decreases accordingly, and vice versa.

[0027] The mounting plate 610, movable bracket 630, and vent fixing plate 640 together form the lower air outlet 120. Specifically, the actual opening range of the lower air outlet 120 is mainly defined by the two mounting plates 610 forming the two side boundaries in the first direction, and by the movable bracket 630 and vent fixing plate 640 forming the two side boundaries along the second direction. When the movable bracket 630 adjusts its position along the second direction, the opening size of the lower air outlet 120 changes with the distance between the movable bracket 630 and the vent fixing plate 640. When the movable bracket 630 moves towards the fixed bracket 620, the distance between it and the vent fixing plate 640 increases, and the effective opening size of the lower air outlet 120 increases accordingly; when the movable bracket 630 moves towards the vent fixing plate 640, the distance between it and the vent fixing plate 640 decreases, and the effective opening size of the lower air outlet 120 decreases accordingly. Therefore, the opening size of the lower air outlet 120 can be adjusted without changing the main structure of the unit to adapt to the air supply requirements under different installation heights, different floor heights, or different target air supply distances.

[0028] The area formed between the fixed bracket 620 and the movable bracket 630 can be used to install the air vent adjustment plate 650. The air vent adjustment plate 650 is detachably coupled to both the fixed bracket 620 and the movable bracket 630, covering the channel formed by the mounting plate 610, the fixed bracket 620, and the movable bracket 630. Since the position of the movable bracket 630 is adjustable, the distance between the fixed bracket 620 and the movable bracket 630 is not fixed. Therefore, multiple air vent adjustment plates 650 are provided, each corresponding to a different bracket spacing. During assembly, an air vent adjustment plate 650 matching the current spacing of the movable bracket 630 can be selected, ensuring a stable connection between the air vent adjustment plate 650 and both the fixed bracket 620 and the movable bracket 630, effectively sealing or covering the corresponding channel.

[0029] Through the above structure, the adjustment of the position of the movable bracket 630 brings about two changes: First, the change in the distance between the movable bracket 630 and the air outlet fixing plate 640 directly changes the opening size of the lower air outlet 120, thereby changing the air outlet cross-section of the downward airflow; second, the change in the distance between the movable bracket 630 and the fixed bracket 620 correspondingly changes the channel size that needs to be covered by the air outlet adjustment plate 650, so that the lower air outlet frame assembly 60 can maintain the integrity and adaptability of the overall structure by replacing the air outlet adjustment plate 650 of different specifications. The movable bracket 630 is both a component involved in the adjustment of the size of the lower air outlet 120 and a reference component for the selection of the air outlet adjustment plate 650. The two work together to form a variety of different air outlet configuration states.

[0030] With this configuration, the lower air outlet 120 is no longer a fixed-size structure, but can be flexibly configured with different opening sizes by adjusting the installation position of the movable bracket 630 and matching the corresponding air outlet adjustment plate 650. When the ducted air conditioner is installed at a high height or the downward air supply distance needs to be extended, the size of the lower air outlet 120 can be adjusted by reducing the distance between the movable bracket 630 and the air outlet fixing plate 640, making the downward air supply state more suitable for the target air supply range. When the installation height is low or the airflow impact needs to be reduced, the lower air outlet 120 can be expanded accordingly by increasing the distance between the movable bracket 630 and the air outlet fixing plate 640. This helps to improve the problem of insufficient adjustment capability of the traditional fixed lower air outlet 120 under different floor heights and installation conditions, reducing the possibility of inadequate air supply or excessive impact.

[0031] In some implementations, such as Figure 3-7 As shown, the top of the fixed bracket 620 has a first mounting surface 6201, and the fixed bracket 620 includes a positioning post 6202 protruding from the first mounting surface 6201. The top of the movable bracket 630 has a second mounting surface 6301, and the movable bracket 630 includes a buckle 6302 protruding from the second mounting surface 6301. The air vent adjustment plate 650 has a positioning hole 6501 that mates with the positioning post 6202 and a buckle mating hole 6502 that mates with the buckle 6302.

[0032] The mounting structure for mates with the air vent adjustment plate 650 is set on the top of the fixed bracket 620 and the movable bracket 630. This facilitates the assembly of the air vent adjustment plate 650 from top to bottom. It also allows for the rapid installation of the air vent adjustment plate 650 directly based on the top reference of the fixed bracket 620 and the movable bracket 630 after the position of the movable bracket 630 is determined. This improves the assembly convenience when switching between air vent adjustment plates 650 of different specifications.

[0033] The positioning post 6202 can preferably be configured as a columnar, prismatic, or other protruding structure with circumferential limiting function, protruding upward from the first mounting surface 6201, so as to form an insertion fit with the positioning hole 6501 first when the air outlet adjustment plate 650 is installed. Through the cooperation of the positioning post 6202 and the positioning hole 6501, the air outlet adjustment plate 650 can be pre-positioned relative to the fixed bracket 620 in the initial stage of installation, which helps to limit the assembly position of the air outlet adjustment plate 650 in the first and second directions, reduce the possibility of assembly misalignment, and also facilitates the use of the fixed bracket 620 as the reference side when installing the air outlet adjustment plate 650, so that the air outlet adjustment plate 650 of different specifications can be stably aligned first when replacing it.

[0034] Simultaneously, after the air vent adjustment plate 650 has completed its pre-positioning on one side of the fixed bracket 620 via the positioning post 6202 and the positioning hole 6501, it can continue to be pressed onto the side of the movable bracket 630, so that the buckle 6302 and the buckle mating hole 6502 form a snap-fit ​​engagement. The buckle 6302 has elastic deformation capability, and during the assembly process, it first retracts under pressure and then returns to its original position after entering the buckle mating hole 6502, thereby limiting and locking the air vent adjustment plate 650. With this setup, the air vent adjustment plate 650 is positioned on one side of the fixed bracket 620 and snapped in place on the other side of the movable bracket 630, creating a clear assembly relationship between the air vent adjustment plate 650, the fixed bracket 620, and the movable bracket 630. During installation, the air vent adjustment plate 650 can be initially aligned using the positioning post 6202 as a reference, and then finally fixed using the snap fastener 6302. This avoids the inconvenience caused by blind installation relying solely on the snap-fit ​​structure, which not only improves installation efficiency but also ensures the stability of the connection after installation.

[0035] Because different air outlet adjustment plates 650 correspond to different spacings between the movable bracket 630 and the fixed bracket 620, the interval between the positioning holes 6501 and the snap-fit ​​holes 6502 on different air outlet adjustment plates 650 can match the spacing between the positioning posts 6202 and the snaps 6302 under the corresponding working conditions. When the movable bracket 630 is adjusted to a certain installation position, selecting the air outlet adjustment plate 650 corresponding to that position will allow the positioning holes 6501 to be accurately aligned with the positioning posts 6202, and the snap-fit ​​holes 6502 to correspond to the positions of the snaps 6302, thus forming an installation structure adapted to that spacing. In this way, the air outlet adjustment plate 650 not only adapts to the overall structure in terms of coverage channels, but also maintains consistency with the corresponding bracket positions in terms of installation interfaces, which is beneficial to improving the universal management and assembly consistency of air outlet adjustment plates 650 of various specifications.

[0036] Preferably, the first mounting surface 6201 and the second mounting surface 6301 are located on the same mounting plane or at similar heights, so that the air vent adjustment plate 650 maintains a good overall flatness after assembly. The positioning post 6202 and the clip 6302 both protrude upwards from their respective mounting surfaces, allowing for direct installation of the mounting interface using the fixed bracket 620 and the movable bracket 630 without adding additional complex connecting parts, thus simplifying the structural hierarchy. When disassembling the air vent adjustment plate 650, the engagement between the clip 6302 and the clip mating hole 6502 can be released first, and then the positioning hole 6501 can be disengaged from the positioning post 6202 to complete the disassembly and replacement.

[0037] In some implementations, such as Figure 8-10 As shown, along the direction from the fixed bracket 620 to the air outlet fixing plate 640, the mounting plate 610 is sequentially provided with a first mounting position 6101, a second mounting position 6102, and a third mounting position 6103 for mounting the movable bracket 630. That is, the movable bracket 630 can be selectively installed at any of the three different positions relative to the mounting plate 610 to form three different assembly states. As the position of the movable bracket 630 changes, the distance between the movable bracket 630 and the fixed bracket 620, as well as the distance between the movable bracket 630 and the air outlet fixing plate 640, will change accordingly. Specifically, when the distance on one side increases, the distance on the other side decreases accordingly, thereby changing the opening size of the lower air outlet 120 defined by the mounting plate 610, the movable bracket 630, and the air outlet fixing plate 640. Correspondingly, an air outlet adjustment plate 650 matching different mounting positions can be selected for installation to form different lower air outlet operating states.

[0038] like Figure 8 As shown, the second mounting position 6102 can be used as the default installation position or the factory preset installation position. During the design phase, the ducted air conditioner can prioritize matching the air duct and setting the air supply parameters around the downward air outlet state corresponding to the second mounting position 6102, so that it has a relatively balanced downward air supply effect under normal installation conditions. For example, in an application scenario with an indoor ceiling height of approximately 3.0m, when the movable bracket 630 is installed at the second mounting position 6102, the opening size of the downward air outlet 120 can form a relatively reasonable matching relationship with the air supply states of the fan at low, medium, and high speeds. This ensures that the downward air supply at low speed does not reach too far from the floor, and the downward air supply at high speed can reach near the floor without generating excessive impact, thus balancing air supply coverage and human comfort.

[0039] When the actual operating environment has a high ceiling, or when the installation height of the ducted air conditioner is higher than the preset adaptation height due to factors such as the overall layout of the unit and the ceiling structure, the movable bracket 630 can be adjusted from the second installation position 6102 to the desired height. Figure 9The third mounting position 6103 is shown. Since the third mounting position 6103 is closer to the air outlet fixing plate 640 along the direction from the fixed bracket 620 to the air outlet fixing plate 640, after the movable bracket 630 is installed at the third mounting position 6103, the distance between it and the air outlet fixing plate 640 decreases, and the opening size of the lower air outlet 120 formed by the mounting plate 610, the movable bracket 630, and the air outlet fixing plate 640 is correspondingly reduced. At the same time, the distance between the movable bracket 630 and the fixed bracket 620 increases, and the size of the correspondingly selected air outlet adjustment plate 650 also changes. By reducing the opening size of the lower air outlet 120, the lower air outlet velocity can be appropriately increased under the same air supply volume, thereby helping to increase the lower air supply range and enabling the airflow to reach the floor area more effectively, reducing the possibility of insufficient air supply due to a high installation position.

[0040] Accordingly, when the actual floor height in the usage environment is low, or when the installation height of the ducted air conditioner is lower than the preset adaptation height due to the limitations of the overall structure, the movable bracket 630 can be adjusted from the second installation position 6102 to the desired height. Figure 10 The first mounting position 6101 is shown. Since the first mounting position 6101 is closer to the fixed bracket 620 along the direction from the fixed bracket 620 to the air outlet fixing plate 640, after the movable bracket 630 is installed at the first mounting position 6101, the distance between it and the air outlet fixing plate 640 increases, and the opening size of the lower air outlet 120 increases accordingly. Simultaneously, the distance between the movable bracket 630 and the fixed bracket 620 decreases, allowing for the installation of an air outlet adjustment plate 650 that matches this spacing. By increasing the opening size of the lower air outlet 120, the lower air outlet velocity can be appropriately reduced under the same airflow conditions, thereby helping to weaken the direct impact of airflow on the floor area, reducing the possibility of direct cold air blowing or excessively strong airflow impact, and making the downward airflow at lower installation heights more gentle.

[0041] By sequentially setting a first mounting position 6101, a second mounting position 6102, and a third mounting position 6103 along the direction on the mounting plate 610, the movable bracket 630 can achieve segmented position switching with a relatively simple disassembly and assembly method, correspondingly enabling the lower air outlet 120 to form at least three different size states. This configuration does not require additional complex linkage adjustment mechanisms; simply by changing the assembly position of the movable bracket 630 on the mounting plate 610 and matching it with an air outlet adjustment plate 650 of the corresponding specification, the lower air outlet effect can be specifically adjusted according to different floor heights or different installation heights, which is beneficial to improving the adaptability of the ducted air conditioner to the actual installation environment.

[0042] In some optional embodiments, the first mounting position 6101, the second mounting position 6102, the third mounting position 6103, and the inner edge of the air outlet fixing plate 640 can be distributed at predetermined intervals along the second direction. Preferably, the spacing between the first mounting position 6101, the second mounting position 6102, the third mounting position 6103, and the inner edge of the air outlet fixing plate 640 can be arranged in an equal-division manner to facilitate a regular variation in the air outlet size, simplifying the design, selection, and assembly process. For example, the adjustable size of the lower air outlet 120 can be set in the range of 40mm to 80mm to balance the air delivery range and the air outlet resistance. When dividing the size, a lower limit can also be set for the minimum opening size to avoid excessive pressure increase and excessive lower air outlet velocity caused by an excessively small opening, which would affect the air delivery comfort and system operation stability. Preferably, the minimum opening size can be greater than 20mm to maintain a reasonable balance between the enhanced air delivery effect after reducing the size of the air outlet and the overall air duct resistance.

[0043] It should also be noted that the number of mounting positions on the mounting plate 610 is not limited to three. In other embodiments, more mounting positions can be provided according to the product series, installation height range, or air supply performance requirements to form more levels of adjustable lower air outlet 120 size. In this embodiment, the first mounting position 6101, the second mounting position 6102, and the third mounting position 6103 are provided mainly to achieve a good balance between structural simplicity, ease of assembly, and adaptability to use.

[0044] In some embodiments, the movable bracket 630 includes a horizontal section 6303 and a vertical section 6304 connected to each other. The air outlet adjusting plate 650 cooperates with the horizontal section 6303. The air outlet frame assembly also includes a fixed air guide plate 660 disposed between the two mounting plates 610. The fixed air guide plate 660 is disposed along the inner edge of the air outlet fixing plate 640, and the fixed air guide plate 660 is directly opposite the vertical section 6304. The fixed air guide plate 660 is vertically disposed, and the space between the fixed air guide plate 660 and the vertical section 6304 forms a vertical air duct communicating with the lower air outlet 120.

[0045] The horizontal section 6303 is used to cooperate with the air outlet adjustment plate 650, and the vertical section 6304 extends downward from the horizontal section 6303. The movable bracket 630 as a whole can form a support structure with an angled transition. The horizontal section 6303 is mainly used to form the installation base of the air outlet adjustment plate 650, while the vertical section 6304 is located on the downstream side of the lower air outlet area to further limit the airflow path. This allows the movable bracket 630 to not only perform position adjustment but also participate in the construction of the lower air outlet duct.

[0046] The fixed air guide plate 660 is vertically positioned and extends downwards away from the air outlet fixing plate 640. The vertical section 6304 of the movable bracket 630 is directly opposite the fixed air guide plate 660, and the vertical section 6304 also extends downwards. Thus, the fixed air guide plate 660 and the vertical section 6304 are spatially spaced and correspond to each other, forming a vertically extending flow area between them. This flow area constitutes a vertical air duct communicating with the lower air outlet 120. It should be noted that the lower air outlet 120 and the vertical air duct are not parallel in the airflow direction, but rather connected front and rear. The lower air outlet 120, defined by the mounting plate 610, the movable bracket 630, and the air outlet fixing plate 640, is located at the front of the downward airflow path, while the vertical air duct formed between the fixed air guide plate 660 and the vertical section 6304 is located at the rear. During the downward flow, the airflow first passes through the lower air outlet 120, and then enters the vertical air duct formed by the fixed air guide plate 660 and the vertical section 6304. It then continues to flow downward along the vertical air duct and is finally discharged. This allows the airflow to be further constrained and guided by the vertical air duct after passing through the lower air outlet 120, thereby making the end air outlet direction more stable.

[0047] Since the position of the vertical section 6304 can change with the installation position of the movable bracket 630, the relative distance between the vertical section 6304 and the fixed air guide plate 660 can also change accordingly. When the movable bracket 630 is installed in different positions, changing the distance between the movable bracket 630 and the air outlet fixing plate 640 not only changes the opening size of the lower air outlet 120, but also changes the positional relationship of the vertical section 6304 relative to the fixed air guide plate 660, causing a corresponding adjustment in the channel size of the vertical air duct. Therefore, the positional change of the movable bracket 630 not only affects the lower air outlet 120 itself, but also simultaneously affects the size of the vertical air duct below the lower air outlet 120, resulting in synchronous adjustment between the front air outlet opening and the rear air guide channel.

[0048] With the above structure, the airflow first passes through the lower outlet 120 to form an initial downward flow, then enters the vertical duct for further sorting and guidance, and finally exits from the lower end of the vertical duct. Compared with the method of direct downward flow relying on a single opening, this method helps the airflow maintain a clear downward direction after leaving the lower outlet 120, reduces premature diffusion of the airflow in the terminal area, and thus improves the controllability of the downward airflow path.

[0049] In some embodiments, the lower air outlet frame assembly 60 further includes a first air guide plate 670 and a second air guide plate 680. The first air guide plate 670 is rotatably disposed on the movable bracket 630, located below the vertical section 6304, with its rotating end near the lower edge of the vertical section 6304. The second air guide plate 680 is rotatably disposed on the mounting plate 610, located below the fixed air guide plate 660, with its rotating end near the lower edge of the fixed air guide plate 660. Thus, the first air guide plate 670 and the second air guide plate 680 can be respectively arranged on both sides of the lower end of the vertical air duct, serving as adjustable air guiding components at the outlet of the vertical air duct.

[0050] Since both the vertical section 6304 and the fixed air guide plate 660 extend downwards, forming a vertical air duct that connects to the lower air outlet 120, the airflow can first pass through the lower air outlet 120, then enter the vertical air duct between the fixed air guide plate 660 and the vertical section 6304, and finally exit from the lower end of the vertical air duct. The first air guide plate 670 is located below the vertical section 6304, and the second air guide plate 680 is located below the fixed air guide plate 660; both are located in the downstream region of the vertical air duct. Thus, after passing through the vertical air duct, the airflow continues to be guided by the first air guide plate 670 and the second air guide plate 680, allowing the angle of the final discharged downward airflow to be adjusted as needed.

[0051] The rotating end of the first air guide plate 670 is positioned near the lower edge of the vertical section 6304, allowing it to rotate around the lower boundary of one side of the vertical air duct. The rotating end of the second air guide plate 680 is positioned near the lower edge of the fixed air guide plate 660, allowing it to rotate around the lower boundary of the other side of the vertical air duct. By positioning the rotating ends of the two air guide plates near the lower edges of the vertical air duct on both sides, the two air guide plates can directly act on the airflow at the outlet of the vertical air duct during their swing, thereby improving the directness and effectiveness of airflow angle adjustment.

[0052] In some embodiments, the first air guide plate 670 and the second air guide plate 680 can rotate towards each other, away from each other, or simultaneously rotate to the same side to change the shape of the guiding boundary at the outlet of the vertical air duct. When the two air guide plates rotate towards each other, they can form a certain converging and guiding effect on the lower outlet of the vertical air duct, making the exhaust airflow more directional; when the two air guide plates rotate away from each other, the guiding boundary at the outlet can be relatively opened, so that the exhaust angle of the airflow is relatively dispersed or closer to vertical downward; when both air guide plates rotate to the same side, by adjusting the rotation angle of the first air guide plate 670 and the second air guide plate 680, the degree of deflection of the downward airflow relative to the vertical direction can be changed according to actual needs to adapt to different floor heights, different installation heights, or different air supply comfort requirements.

[0053] Optionally, the first guide vane 670 and the second guide vane 680 can be adjusted individually or in conjunction. Adjusting only one guide vane changes the airflow boundary on one side of the vertical duct outlet, thus causing a unilateral deflection of the airflow. When both guide vanes are adjusted simultaneously, a symmetrical or asymmetrical guiding effect can be achieved on the entire vertical duct outlet. This not only adjusts the overall outlet angle of the downward airflow but also allows for a certain degree of control over the airflow's attachment direction, diffusion trend, or landing position, making the airflow organization at the downward airflow terminal more flexible.

[0054] The adjustment of the front air outlet size and the rear air outlet angle can work together to allow the downward air supply to not only adapt the air supply distance by changing the size of the downward air outlet 120, but also optimize the exhaust direction by changing the angle of the air guide plate. This helps to improve the air supply coverage and user comfort in different usage scenarios.

[0055] In some embodiments, a limiting plate 6203 protruding upward from the first mounting surface 6201 is formed on the fixed bracket 620. The limiting plate 6203 is inclined relative to the first mounting surface 6201. That is, the limiting plate 6203 is not perpendicular to the first mounting surface 6201, but extends upward from the first mounting surface 6201 at a predetermined angle, thereby forming an angled area together with the first mounting surface 6201. The edge of the air vent adjustment plate 650 is matched and disposed within the angled area formed by the first mounting surface 6201 and the limiting plate 6203, so that the air vent adjustment plate 650 can not only be installed and positioned on one side of the fixed bracket 620, but also form a relatively stable abutment relationship at the edge. Through this arrangement, the limiting plate 6203 can provide a limiting effect on the edge of the air vent adjustment plate 650, which helps to improve the stability of the air vent adjustment plate 650 after assembly and reduces the occurrence of warping, loosening or assembly misalignment at its edge.

[0056] The edge of the air vent adjustment plate 650 can be inserted into or embedded in the included angle region, so that the lower surface of the edge of the air vent adjustment plate 650 abuts against the first mounting surface 6201, and the side abuts against the limiting plate 6203. In this way, the assembly state of the air vent adjustment plate 650 on one side of the fixed bracket no longer relies solely on a single planar overlap, but rather forms a guiding edge mounting structure through the combined action of the first mounting surface 6201 and the inclined limiting plate 6203. Especially when the air vent adjustment plate 650 needs to be replaced according to different spacing specifications, the limiting plate 6203 can guide the edge of the air vent adjustment plate 650 into place, making it easier for the air vent adjustment plate 650 to enter the predetermined position during assembly.

[0057] Because the limiting plate 6203 is inclined relative to the first mounting surface 6201 and protrudes upward from the first mounting surface 6201, it can also guide the airflow path when the airflow passes through the area near the fixed bracket 620. Specifically, after the airflow reaches this part, it can climb upward along the inclined surface of the limiting plate 6203, and then enter the lower air outlet 120 along the upper surface of the air outlet adjustment plate 650. This allows a relatively gentle airflow transition path to be formed between the limiting plate 6203 and the air outlet adjustment plate 650, so that the airflow does not have to directly impact the mating interface between the air outlet adjustment plate 650 and the first mounting surface 6201 before entering the lower air outlet 120. Instead, it transitions continuously along the inclined surface and the upper surface of the air outlet adjustment plate 650, which helps to reduce the possibility of local impact, separation or turbulence of the airflow at the mating part, thereby reducing the wind resistance loss at this part and reducing the risk of air leakage at the mating interface.

[0058] Preferably, the edge of the air vent adjusting plate 650 has a wedge-shaped surface 6503 that fits against the surface of the limiting plate 6203. That is, the edge of the air vent adjusting plate 650 is not a simple right-angle end, but rather a beveled structure that matches the inclined surface of the limiting plate 6203, allowing the wedge-shaped surface 6503 to abut and engage with the surface of the limiting plate 6203 after the air vent adjusting plate 650 is assembled in place. The fit between the wedge-shaped surface 6503 and the surface of the limiting plate 6203 further improves the tightness of the fit at the edge of the air vent adjusting plate 650 and reduces assembly gaps.

[0059] like Figure 12 As shown in the figure, this application embodiment also provides a duct air conditioner, which includes an air outlet housing 10 and a lower air outlet frame assembly 60. The air outlet housing 10 has a side air outlet 110 located on the side and a lower air outlet 120 located on the bottom. The lower air outlet frame assembly 60 is disposed on the bottom plate of the air outlet housing 10, and the mounting plate 610, the air outlet fixing plate 640 and the movable bracket 630 together form the lower air outlet 120.

[0060] In this ducted air conditioner, the lower air outlet 120 is not directly formed by opening a fixing hole in the bottom plate of the air outlet housing 10, but rather the actual air outlet boundary is defined by multiple components in the lower air outlet frame assembly 60. Specifically, two mounting plates 610 respectively constitute the boundaries of the lower air outlet 120 on both sides in the first direction, while the air outlet fixing plate 640 and the movable bracket 630 constitute the boundary of the lower air outlet 120 in the second direction. The position of the movable bracket 630 relative to the mounting plate 610 is adjustable, thus changing the distance between the movable bracket 630 and the air outlet fixing plate 640, thereby changing the opening size of the lower air outlet 120. In this way, while keeping the overall housing structure essentially unchanged, the lower air outlet 120, formed by the mounting plate 610, the air outlet fixing plate 640, and the movable bracket 630, can form different opening states by adjusting the movable bracket 630 to different installation positions. A larger 120mm lower air outlet opening helps reduce the lower air velocity and weaken airflow impact; a smaller 120mm lower air outlet opening helps increase the lower air velocity and enhance the lower air delivery range. Therefore, when dealing with lower ceiling heights or lower installation heights, a larger lower air outlet opening can improve airflow comfort; conversely, when dealing with higher ceiling heights or higher installation heights, a smaller lower air outlet opening can improve air delivery capacity, thereby reducing the possibility of inadequate airflow or excessive airflow impact.

[0061] In some implementations, such as Figure 2 , Figure 3 and Figure 8-10 As shown, the fixed bracket 620 has an inclined guide surface 6204 on the side facing away from the air outlet fixing plate 640. The guide surface 6204 gradually extends upwards along the direction gradually approaching the air outlet fixing plate 640. When the airflow passes through the area near the fixed bracket 620, it does not form an abrupt step or right-angle transition surface, but rather a gradually rising transition boundary towards the air outlet fixing plate 640 through the inclined guide surface 6204. In this way, the airflow from the upstream area, after flowing to the vicinity of the fixed bracket 620, can gradually climb along the guide surface 6204 and be guided to the area above the lower air outlet 120, thus giving the airflow a smoother flow trajectory before entering the lower air outlet 120.

[0062] As the guide surface 6204 extends gradually upwards along the direction approaching the air outlet fixing plate 640, it can gradually lift the originally dispersed or somewhat impactful airflow, directing it closer to the upper surface of the air outlet adjusting plate 650 or the inlet area of ​​the lower air outlet 120. Therefore, the airflow is less likely to experience significant backflow, separation, or local stagnation near the fixing bracket 620. Instead, it can adjust its direction along the guide surface 6204 and continue into the lower air outlet 120, reducing local wind resistance in the area near the fixing bracket 620 and improving the airflow introduction effect to the lower air outlet 120.

[0063] With the limiting plate 6203 in place, the guide surface 6204 extends to the top of the limiting plate 6203. The guide surface 6204 and the aforementioned limiting plate 6203 can be structurally connected continuously or smoothly transitioned, so that the guide boundary of the fixed bracket 620 on the side away from the air outlet fixing plate 640 extends all the way to the top area of ​​the limiting plate 6203.

[0064] In some implementations, such as Figure 11 and 12 As shown, the ducted air conditioner also includes a water collection tray 50. On the side of the water collection tray 50 facing the lower air outlet frame assembly 60, an upwardly inclined guide wall 510 is formed, which is attached to the lower side of the guide surface 6204. The lower air outlet frame assembly 60 is located on the lower side of the ducted air conditioner and is installed between the water collection tray 50 and the side air outlet 110. The side of the water collection tray 50 near the lower air outlet frame assembly 60 is not a simple straight edge, but rather forms an inclined guide wall 510 that connects with the guide surface 6204 of the fixed bracket 620. By setting the guide wall 510 to extend upwards and attaching it to the lower side of the guide surface 6204, a continuous transition guide boundary can be formed between the water collection tray 50 and the lower air outlet frame assembly 60, thereby providing a smoother flow path for airflow to transition from the lower part of the ducted air conditioner to the lower air outlet area.

[0065] During operation, the airflow after passing through the heat exchanger 80 can enter obliquely downwards into the area above or adjacent to the water receiving tray 50, and then flow along the bottom of the water receiving tray 50 before gradually transitioning to the guide wall 510, and then from the guide wall 510 to the guide surface 6204 on the fixed support 620. Because the guide wall 510 and the guide surface 6204 are spatially fitted and connected, the airflow entering the lower air outlet frame assembly 60 from the water receiving tray 50 area is less likely to experience a significant flow abrupt change at their junction. Instead, it can continuously climb along the bottom of the water receiving tray 50, the guide wall 510, and the guide surface 6204 and be guided to the vicinity of the lower air outlet 120. This helps reduce airflow separation, backflow, or local stagnation in the connection area between the water receiving tray 50 and the lower air outlet frame assembly 60, thus reducing air resistance loss in this area.

[0066] In this embodiment, the water receiving tray 50 no longer exists merely as a drainage component, but rather forms a composite structure with the lower air outlet frame assembly 60, serving both drainage and air guiding functions. On one hand, the guide wall 510 can cooperate with the guide surface 6204 to pre-guide the airflow; on the other hand, the water receiving tray 50 can still retain its function of receiving condensate below the heat exchanger 80. This arrangement helps to improve the rational utilization of the internal space of the ducted air conditioner and makes the structural connection between the water receiving tray 50 and the lower air outlet frame assembly 60 more compact.

[0067] The airflow along the guide wall 510 and guide surface 6204 is typically a stream of air passing through the condenser heat exchanger 80 or flowing near the water collection pan 50. This airflow may carry small water droplets forward during its flow. Especially when condensation forms on the surface of the heat exchanger 80, when there is humid airflow near the water collection pan 50, or when the airflow velocity is high, some small water droplets may move along the guide wall 510 and guide surface 6204 towards the lower air outlet 120 with the air stream. If these small water droplets are not effectively collected and returned, they may continue to flow into the lower air outlet 120 and be blown out, thus affecting airflow comfort and user experience.

[0068] Based on this, such as Figure 2 , Figure 3 and Figure 8-10 As shown, in some embodiments, the guide surface 6204 is recessed into the fixed bracket 620 to form a guide groove 6205, the guide groove 6205 extends along the first direction, and the fixed bracket 620 has a channel connecting the guide groove 6205 and the water receiving tray 50. In this embodiment, the guide surface 6204 of the fixed bracket 620, which guides the airflow upward, is not only formed as a single smooth slope, but also further provided with a recessed guide groove 6205 for collecting droplets. By providing a guide groove 6205 on the guide surface 6204, this embodiment allows small water droplets moving along the guide surface 6204 to preferentially converge into the guide groove 6205 under the action of gravity. Because the guide channel 6205 is concave relative to the guide surface 6204, when the airflow carrying small water droplets flows along the guide surface 6204, the small water droplets are more likely to detach from the main airflow and fall into the guide channel 6205 under the combined influence of gravity, inertial changes, and local adhesion. In this way, the guide channel 6205 can serve as a droplet collection area, intercepting and collecting small water droplets that might otherwise continue to move forward, thereby reducing the possibility of droplets continuing to migrate downwards along the guide surface 6204 to the air outlet 120.

[0069] The guide channel 6205 extends along the first direction of the lower air outlet frame assembly 60 to receive and collect small water droplets flowing along the guide surface 6204 over a relatively wide range. At the same time, the diversion channel is disposed inside the fixed bracket 620 and communicates the guide channel 6205 with the water receiving tray 50, so that the liquid collected in the guide channel 6205 can flow back to the water receiving tray 50.

[0070] With the above structure, small water droplets flowing along the guide wall 510 and guide surface 6204 can be preferentially intercepted and returned to the water collection tray 50 before entering the lower air outlet 120, thereby reducing the possibility of small water droplets blown forward by the air duct being blown out through the lower air outlet 120, thus playing a role in preventing water from being blown out. Especially when the ducted air conditioner is operating at a large air volume or in condensation mode, this structure helps to reduce the phenomenon of water being carried out of the air outlet and improve the stability and comfort of the downward air supply. At the same time, since the guide groove 6205 is set on the guide surface 6204 and is connected to the guide groove inside the fixed bracket 620, this water-prevention function can be achieved without significantly increasing the overall structural complexity, taking into account both air guiding performance and drainage return requirements.

[0071] In some embodiments, the vertical depth of the guide channel 6205 is 1-2 mm, and the opening width of the guide channel 6205 on the guide surface 6204 is 1-2 mm. By controlling the depth and opening width of the guide channel 6205 within the above range, a relatively balanced relationship can be achieved between droplet collection capacity and airflow disturbance, thereby minimizing the adverse effects on the airflow organization at the guide surface 6204 while the guide channel 6205 performs its water return function.

[0072] Specifically, the depth of the guide channel 6205 directly affects its ability to accommodate and collect small water droplets. When the depth of the guide channel 6205 is too small, the space available for droplets to stay and collect is relatively limited. Small water droplets flowing along the guide surface 6204 are not easily intercepted effectively, or they are disturbed by airflow again before they can flow back through the guide channel, thus reducing the anti-blowing effect. Conversely, when the depth of the guide channel 6205 is too large, the local concavity of the guide surface 6204 increases, making it easier for more airflow to enter the interior of the guide channel 6205. This can lead to local backflow, eddies, or pulsating flow within the concave area, which not only weakens the smooth transition of the main airflow along the guide surface 6204 but also causes additional noise. Therefore, setting the vertical depth of the guide channel 6205 to 1-2 mm is beneficial for balancing droplet collection space and airflow stability.

[0073] Furthermore, the opening width of the guide channel 6205 on the guide surface 6204 also affects the ease with which droplets enter the guide channel 6205 and the disturbance of airflow in the guide channel 6205 area. When the opening width is too small, the channel for droplets to enter the guide channel 6205 is relatively narrow, which is not conducive to the smooth flow of small water droplets dispersed on the guide surface 6204 into the guide channel 6205, and may reduce the droplet collection efficiency of the guide channel 6205. On the other hand, when the opening width is too large, the guide channel 6205 is more open to the mainstream airflow, and the mainstream airflow is more likely to be drawn into the groove, causing enhanced airflow disturbance in the groove area, and may bring local noise or unnecessary wind resistance loss. Based on this, setting the opening width of the guide channel 6205 to 1-2 mm is beneficial to make it easier for droplets to enter the guide channel 6205, while reducing the possibility of too much airflow entering the guide channel 6205.

[0074] Therefore, the setting of the guide groove 6205 with a vertical depth of 1-2mm and an opening width of 1-2mm on the guide surface 6204 is conducive to achieving a more reasonable comprehensive balance between anti-blowing effect, airflow smoothness and operating noise control, reducing the possibility of small water droplets blown forward by the wind beam being discharged through the lower air outlet 120, and reducing airflow backflow and noise problems caused by excessively large groove structure.

[0075] Currently, the air outlet methods of ducted air conditioners are mainly side outlet or bottom outlet. The aforementioned embodiment solved the technical problem of inconvenient air outlet distance adjustment for bottom outlets. However, existing ducted air conditioners also have the problem of limited air supply distance for side outlets in practical applications, making it difficult to effectively deliver airflow to the far end of the room, resulting in poor room heating effect, obvious temperature difference between different areas of the room, and a large air supply blind zone, which cannot meet the requirement of uniform airflow distribution.

[0076] Furthermore, existing research on dual-outlet ducted air conditioners mainly focuses on the switching between side and bottom air outlet modes or the implementation of dual-outlet modes. However, while adding related structures to expand functionality, current technologies often significantly impact the airflow and noise levels of the side outlet. Although this improves the functionality of the ducted air conditioner to some extent, it also has a noticeable negative impact on the original side outlet performance.

[0077] like Figure 13-21As shown in the figure, this application embodiment provides an air outlet structure for a ducted air conditioner, applied to the ducted air conditioner provided in the aforementioned embodiment. The main structure of the air outlet structure includes an air outlet housing 10, an upper arc-shaped baffle assembly 20, and a lower baffle support assembly. The air outlet housing 10 has a side air outlet 110 located on the side and a lower air outlet 120 located on the bottom. The upper arc-shaped baffle assembly 20 is rotatably disposed inside the side air outlet 110, used to open or block the upper air outlet area of ​​the side air outlet 110. The lower baffle support assembly is rotatably disposed inside the side air outlet 110, used to open the lower air outlet area of ​​the side air outlet 110 and block the lower air outlet 120. When in the side air outlet remote air delivery mode, the lower baffle support assembly is rotated to block the lower air outlet 120, and the upper arc-shaped baffle assembly 20 is rotated to partially or completely block the upper air outlet area, thereby reducing the air outlet area of ​​the side air outlet 110 and increasing the air delivery distance.

[0078] It should be noted that in the side-discharge far-reaching air supply mode, by rotating the lower baffle bracket assembly to block the lower air outlet 120, and simultaneously rotating and adjusting the upper arc-shaped baffle assembly 20 to block the area of ​​the upper air outlet area of ​​the side air outlet 110, the overall air outlet area of ​​the side air outlet 110 is reduced. According to the principles of fluid mechanics, reducing the air outlet area can increase the air outlet velocity, thereby increasing the air supply distance, enabling the airflow to be effectively delivered to the far areas of the room, improving the room heating effect, reducing the indoor temperature difference, and thus achieving energy-saving effects.

[0079] It should be noted that when adding dual-outlet functionality, existing technologies often significantly impact the airflow and noise of the side outlet due to the added structure. This solution, through a rotating baffle structure, achieves multi-mode switching while maintaining the integrity of the main structure of the side outlet 110. Furthermore, it optimizes air delivery performance by adjusting the air outlet area, rather than simply adding a blocking structure. This allows for functional expansion while maintaining or improving the side outlet performance. By rotating and adjusting the upper arc-shaped baffle assembly 20 and the lower baffle bracket assembly, flexible switching between various air delivery modes, such as side outlet remote air delivery, conventional side outlet, and bottom outlet, can be achieved to meet the needs of different usage scenarios.

[0080] In some embodiments, the upper arc-shaped baffle assembly 20 includes an upper arc-shaped baffle 210 and an upper baffle bracket 220. The upper arc-shaped baffle 210 has a convex arc surface in the direction of the side air outlet 110. One end of the upper baffle bracket 220 near the side air outlet 110 is connected to the inner side surface of the upper arc-shaped baffle 210, and the other end away from the side air outlet 110 is rotatably connected to the air outlet housing 10.

[0081] It should be noted that the upper arc-shaped wind deflector 210 has a convex arc surface in the direction of the side air outlet 110. The convex arc surface (the back is a concave arc surface) structure has better aerodynamic characteristics than a flat or concave surface. When the airflow passes through the convex arc surface, it can smoothly turn along the arc surface, reduce airflow separation and vortex generation, thereby reducing wind resistance and airflow noise and improving air supply efficiency.

[0082] It should be noted that, as Figure 19-22 As shown, the end of the upper wind deflector bracket 220 near the side air outlet 110 is connected to the inner side of the upper arc-shaped wind deflector 210, and the end away from the side air outlet 110 is rotatably connected to the air outlet housing 10. This connection method allows the upper arc-shaped wind deflector 210 to be angled around the rotation axis, thereby precisely controlling the shielding area of ​​the upper air outlet area and flexibly adjusting the air outlet area of ​​the side air outlet 110, thereby adjusting the air outlet speed and air delivery distance. The upper wind deflector bracket 220 can be multiple (such as 2, 4, 6, etc.) rods intersecting in the air outlet housing 10. The rod bracket has a small obstruction area for airflow, and airflow can pass smoothly through the gaps between the rods, reducing airflow turbulence and eddies, reducing wind resistance and airflow noise, and improving air delivery efficiency.

[0083] In some embodiments, the lower baffle bracket assembly includes a central arc-shaped baffle assembly 30 and a bottom baffle plate 40. The central arc-shaped baffle assembly 30 is rotatably disposed inside the side air outlet 110, and is used to open or cover the upper area of ​​the lower air outlet area and the inner air outlet area of ​​the lower air outlet 120. One end of the bottom baffle plate 40 is rotatably disposed between the side air outlet 110 and the lower air outlet 120, and the other end is slidably connected to the outer surface of the central arc-shaped baffle assembly 30, and is used to open or cover the lower area of ​​the lower air outlet area and the outer air outlet area of ​​the lower air outlet 120. In the side air outlet mode, rotating the upper arc-shaped baffle assembly 20 opens the upper air outlet area, and rotating the central arc-shaped baffle assembly 30 drives the bottom baffle plate 40 to rotate, covering the lower air outlet 120. In the lower air outlet mode, rotating the upper arc-shaped baffle assembly 20 covers the upper air outlet area, and rotating the central arc-shaped baffle assembly 30 drives the bottom baffle plate 40 to rotate, covering the lower air outlet area.

[0084] It should be noted that, as Figure 14-19 As shown, through the independent control and coordinated operation of the upper arc-shaped baffle assembly 20 and the lower baffle bracket assembly, the following can be achieved: 1) Side air outlet mode: The upper arc-shaped baffle assembly 20 opens the upper air outlet area, and the middle arc-shaped baffle assembly 30 drives the bottom baffle plate 40 to rotate, blocking the lower air outlet 120, and all airflow is discharged from the side air outlet 110; 2) Lower air outlet mode: The upper arc-shaped baffle assembly 20 blocks the upper air outlet area, and the middle arc-shaped baffle assembly 30 drives the bottom baffle plate 40 to rotate, blocking the lower air outlet area, and all airflow is discharged from the lower air outlet 120; 3) Dual air outlet mode: The upper arc-shaped baffle assembly 20 opens the upper air outlet area, and the middle arc-shaped baffle assembly 30 drives the bottom baffle plate 40 to rotate, opening the lower air outlet 120, and airflow is discharged from both the side air outlet 110 and the lower air outlet 120 simultaneously; The three modes switch smoothly and do not interfere with each other, which can meet the diverse air supply needs of different seasons and different scenarios.

[0085] It should be noted that the lower baffle bracket assembly divides the lower air outlet area into an upper and a lower region: the middle arc-shaped baffle assembly 30 controls the upper region of the lower air outlet area and the inner air outlet area of ​​the lower air outlet 120; the bottom baffle plate 40 controls the lower region of the lower air outlet area and the outer air outlet area of ​​the lower air outlet 120. Through zone control, the air outlet area of ​​the lower air outlet area can be finely adjusted, thereby flexibly controlling the air outlet speed and airflow distribution. Furthermore, if zone control is not used, a large baffle plate would be required to simultaneously shield both the lower air outlet area (which has a large area) and the lower air outlet 120 (which is located in a dispersed manner). The baffle assembly covers the entire area, while through zone control, the middle arc-shaped baffle assembly 30 is only responsible for shielding the upper area of ​​the lower air outlet zone and the inner air outlet zone of the lower air outlet 120; the bottom baffle 40 is only responsible for shielding the lower area of ​​the lower air outlet zone and the outer air outlet zone of the lower air outlet 120. Each baffle only needs to cover its corresponding zone area, and the area of ​​a single baffle is significantly reduced, so that the baffle assembly is decomposed from a large and complex structure into two small and simple structures, making the shape of each baffle more regular, the structure simpler, and the overall volume smaller, which is conducive to the miniaturization and weight reduction of the entire duct air conditioner.

[0086] It should be noted that one end of the bottom baffle 40 is slidably connected to the outer side of the middle arc-shaped baffle assembly 30, forming a linkage transmission structure. Only one drive source is needed to control both baffles simultaneously, simplifying the drive mechanism and reducing costs and failure rates. The rotation centers of the middle arc-shaped baffle assembly 30 and the upper arc-shaped baffle assembly 20 do not coincide, allowing them to rotate and be controlled independently without interference. This avoids motion interference or mutual constraints that may occur due to the coincidence of rotation centers, resulting in simple control logic and clear motion trajectories. The two rotation centers can be selected at their optimal positions according to the internal space structure of the air outlet housing 10. The staggered layout allows each baffle assembly to occupy a different space area during rotation, making full use of the scattered space inside the housing and facilitating the miniaturization of the entire unit. Furthermore, since the two baffle assemblies can be adjusted independently, various air supply modes such as side air outlet mode, side air outlet far-reaching air supply mode, bottom air outlet mode, and dual air outlet mode can be freely combined to meet the diverse needs of different usage scenarios.

[0087] In some embodiments, the central arc-shaped baffle assembly 30 includes a central arc-shaped baffle 320 and a central baffle bracket 310; the central arc-shaped baffle 320 has a concave arc surface in the direction of the side air outlet 110; one end of the central baffle bracket 310 near the side air outlet 110 is connected to the inner side surface of the central arc-shaped baffle 320, and the other end away from the side air outlet 110 is rotatably connected to the air outlet housing 10.

[0088] It should be noted that, as Figure 16As shown, when the side air outlet mode is activated and the upper air outlet area is open, the central arc-shaped baffle assembly 30 shields the lower air outlet area. At this time, the concave arc surface is opposite to or tangential to the main airflow direction, allowing the airflow to flow smoothly along the concave arc surface, avoiding the formation of right-angle obstructions or vortex areas. This effectively reduces wind resistance and airflow noise, ensuring the efficiency and comfort of the side air outlet. Furthermore, the concave arc surface structure has higher bending stiffness than a flat surface, effectively resisting airflow impact and deformation during long-term use, ensuring the shielding accuracy and sealing effect of the lower air outlet area, and improving the reliability and lifespan of the assembly.

[0089] It should be noted that the middle baffle bracket 310 can be multiple (such as 2, 4, 6, etc.) rods intersecting within the air outlet housing 10. The rod bracket has a small obstruction area for airflow, allowing airflow to pass smoothly through the gaps between the rods, reducing airflow turbulence and eddies, lowering wind resistance and airflow noise, and improving air delivery efficiency.

[0090] It should be noted that, as Figure 14 , 15 As shown, in the downward air outlet mode: the upper arc-shaped baffle assembly 20 shields the upper air outlet area, the middle arc-shaped baffle assembly 30 shields the lower air outlet area, and the bottom baffle 40 opens the lower air outlet 120. At this time, although both the convex and concave arc surfaces are shielded, they together form a continuous airflow turning channel: the convex arc surface smoothly guides the airflow impacting it downwards, and the concave arc surface receives the airflow from above, further collects and turns it. The airflow flows smoothly through the bottom baffle 40 to the bottom lower air outlet 120, which can reduce the energy loss and vortex generation of the airflow during the turning process and improve the air supply efficiency of the downward air outlet mode.

[0091] In some embodiments, the air outlet structure of the duct unit further includes at least one sliding connection mechanism, which includes a longitudinal slide groove 2104 and a sliding buckle 3201. The longitudinal slide groove 2104 is provided on the outer side of the arc-shaped wind baffle 320 and extends along the width direction of the arc-shaped wind baffle 320. One end of the sliding buckle 3201 is embedded in the longitudinal slide groove 2104 and the other end is connected to the bottom wind baffle 40.

[0092] It should be noted that, as Figure 21 , 22As shown, through the engagement of the sliding buckle 3201 with the longitudinal groove 2104, when the arc-shaped baffle assembly 30 rotates, the sliding buckle 3201 slides relative to the longitudinal groove 2104, thereby driving the bottom baffle 40 to rotate synchronously. This linkage structure only requires one drive source (driving the arc-shaped baffle assembly 30) to control the two baffles simultaneously, reducing the number of drive mechanisms, simplifying the control system, and reducing costs and failure rates. Moreover, the arc-shaped baffle assembly 30 and the bottom baffle 40 each have different rotation centers, and the sliding connection mechanism can effectively compensate for the relative displacement and angle changes generated during their movement. The sliding degree of freedom of the sliding buckle 3201 in the longitudinal groove 2104 allows the two baffles to adaptively adjust along the groove direction when rotating, avoiding motion interference or structural damage that may be caused by rigid connection.

[0093] It should be noted that the sliding buckle 3201 and the longitudinal slide groove 2104 are connected by an embedded type. During assembly, they can be simply slid in without the need for additional fasteners, which is highly efficient. They can also be quickly disassembled for maintenance, making it convenient for repairs. By adjusting the rotation angle of the central arc-shaped baffle assembly 30, the opening of the bottom baffle 40 to the lower air outlet 120 can be changed, thereby realizing continuous adjustment of the air volume ratio between the side air outlet and the lower air outlet. Users can flexibly allocate the air volume of the side air outlet and the lower air outlet according to actual needs (such as room layout, temperature distribution, usage scenario, etc.) to achieve the best comfort effect.

[0094] In some embodiments, at least one sliding connection mechanism is a plurality of sliding connection mechanisms, which are arranged at intervals along the length direction of the arc-shaped windbreak 320.

[0095] It should be noted that multiple sliding connection mechanisms are arranged at intervals along the length of the central arc-shaped wind deflector 320, expanding the connection point between the bottom wind deflector 40 and the central arc-shaped wind deflector 320 from a single point to multiple points. This effectively prevents the bottom wind deflector 40 from tilting or twisting during movement, improving the stability and reliability of the linkage transmission. Furthermore, the multi-point support structure distributes the driving force and load to multiple connection points, achieving balanced force distribution, avoiding stress concentration at a single point, and extending the service life of the sliding connection mechanism and the bottom wind deflector 40. At the same time, the bottom wind deflector 40 obtains multiple support points along its length, significantly improving its overall rigidity and bending strength, making it less prone to deformation when subjected to airflow impact, and ensuring a tight seal with the lower air outlet 120.

[0096] It should be noted that when the lower air outlet 120 is closed, the multi-point support allows the bottom baffle plate 40 to be evenly pressed against the edge of the lower air outlet 120, avoiding the situation where one side is pressed and the other side is lifted due to single-point drive, which significantly improves the sealing effect and reduces air leakage.

[0097] In some embodiments, the air outlet structure of the ducted air conditioner is structurally fitted with the lower air outlet frame assembly 60 and the water collection tray 50; the water collection tray 50 is located below the heat exchanger 80 of the ducted air conditioner and inside the lower air outlet frame assembly 60; a fixed bracket 620 is located between the lower air outlet 120 and the water collection tray 50, the water collection tray 50 has a guide wall 510, and the fixed bracket 620 has a guide surface 6204 and a limiting plate 6203. As described above, the airflow after passing through the heat exchanger 80 can enter obliquely downwards into the area above or adjacent to the water collection tray 50, and after flowing along the bottom of the water collection tray 50, gradually transition to the guide wall 510, and then from the guide wall 510 to the guide surface 6204 on the fixed bracket 620. When the rotating arc-shaped baffle assembly 30 drives the bottom baffle plate 40 to rotate and block the lower air outlet 120, as... Figure 13 As shown, the end of the arc-shaped wind deflector 320 abuts against the limiting plate 6203. At this time, the end of the limiting plate 6203 connects with the arc-shaped surface of the arc-shaped wind deflector 320. The airflow transitions from the guide wall 510 to the guide surface 6204 on the fixed bracket 620, continues to climb along the limiting plate 6203, and then naturally transitions to the arc-shaped surface of the arc-shaped wind deflector 320. It is further guided to the surface of the bottom wind deflector 40 and then discharged from the side air outlet 110.

[0098] It should be noted that, as mentioned above, in the downward air outlet mode, the lower airflow transitions through the guide wall 510 to the guide surface 6204 on the fixed bracket 620, passes over the limiting plate 6203, and continues to conform to the surface of the air outlet adjustment plate 650, smoothly guiding it to the downward air outlet 120. This reduces energy loss and eddy current generation, improves air supply efficiency, and avoids airflow noise caused by steps or sharp angle structures. In the side air outlet mode, the central arc-shaped baffle 320 abuts against the limiting plate 6203. While cutting off the path of airflow leakage from the lower air outlet 120, it achieves the orderly connection of the fixed bracket 620, the arc-shaped wind baffle 320, and the bottom wind baffle 40, smoothly guiding the airflow to the side air outlet 110, reducing energy loss and eddy current generation, and improving air supply efficiency; and the fixed bracket 620 is connected to the water receiving tray 50, and the fixed bracket 620 is equipped with a guide groove 6205 and a diversion groove 6206 to reduce the occurrence of water blowing phenomenon, so that condensate can flow smoothly into the water receiving tray 50.

[0099] In some embodiments, the ducted air conditioner further includes a heat exchanger side plate 70, a first upper baffle protrusion 2101, and a second upper baffle protrusion 2102; the heat exchanger side plate 70 is connected to the heat exchanger 80 of the ducted air conditioner and is located above the inner side of the side air outlet 110, and has a first sealing protrusion 710 located near the heat exchanger 80 and a second sealing protrusion 720 located away from the heat exchanger 80; the first upper baffle protrusion 2101 is disposed on the upper arc-shaped baffle plate 210. The upper arc-shaped baffle plate 210 protrudes outward from the end away from the side air outlet 110 and upward from the outer side of the baffle plate 210; the second upper baffle protrusion 2102 is located at the end of the upper arc-shaped baffle plate 210 near the side air outlet 110 and protrudes outward from the outer side of the baffle plate 210; when the upper arc-shaped baffle assembly 20 is rotated to open the upper air outlet area, the first upper baffle protrusion 2101 abuts against the first sealing protrusion 710 and the second upper baffle protrusion 2102 abuts against the second sealing protrusion 720.

[0100] It should be noted that, as Figure 16-19 As shown, in the side-outlet mode or the dual-outlet mode, the first upper baffle protrusion 2101 and the second upper baffle protrusion 2102 at both ends of the upper arc-shaped baffle 210 abut against the first sealing protrusion 710 and the second sealing protrusion 720 on the heat exchanger side plate 70, respectively, forming two sealing structures. This effectively prevents airflow from leaking from the gap between the upper arc-shaped baffle 210 and the heat exchanger side plate 70, ensuring that all airflow is discharged from the upper air outlet area and improving air supply efficiency.

[0101] It should be noted that the upper sealing mechanism has sealing mating points at one end near the heat exchanger 80 and the other end near the side air outlet 110, forming a multi-point sealing structure. Even if one sealing point experiences slight wear, the other sealing points can still maintain the sealing effect, improving the redundancy and reliability of the sealing system. At the same time, the sealing protrusion and the baffle protrusion automatically form a seal when the baffle plate reaches the predetermined opening position, without the need for an additional clamping mechanism. The structure is simple, the sealing is reliable, and dynamic sealing is achieved in the rotating state. Furthermore, the heat exchanger side plate 70, while serving the function of installing and positioning the heat exchanger 80, directly integrates the sealing protrusion, integrating the sealing function into the existing structure without the need for additional sealing components, simplifying the structural design and reducing the number of parts.

[0102] In some embodiments, the duct unit further includes a third sealing protrusion 730 and an inner protrusion 2103 of the upper baffle; the third sealing protrusion 730 is disposed between the first sealing protrusion 710 and the second sealing protrusion 720; the inner protrusion 2103 of the upper baffle is disposed on the inner side of one end of the upper arc-shaped baffle 210 near the side air outlet 110; when the upper arc-shaped baffle assembly 20 is rotated to shield the upper air outlet area, the first upper baffle protrusion 2101 abuts against the third sealing protrusion 730, and the inner protrusion 2103 of the upper baffle abuts against the upper edge of the lower baffle support assembly.

[0103] It should be noted that when the upper air outlet is closed, the first upper baffle protrusion 2101 and the third sealing protrusion 730 abut to form the first seal, and the inner side protrusion 2103 of the upper baffle abuts to form the second seal with the upper edge of the lower baffle bracket assembly. The double sealing structure effectively prevents airflow from leaking from the upper air outlet and ensures that all airflow is discharged from the lower air outlet 120 in the lower air outlet mode, thereby improving air supply efficiency.

[0104] It should be noted that the first upper baffle protrusion 2101 moves between the first sealing protrusion 710 and the third sealing protrusion 730. The first sealing protrusion 710 and the third sealing protrusion 730 together constitute the movement limit of the first upper baffle protrusion 2101, which respectively limits the extreme positions of the upper arc-shaped wind deflector 210 when it is opened and closed, realizing bidirectional mechanical limit and avoiding excessive rotation of the wind deflector, which may cause structural damage or sealing failure. Both extreme positions can provide clear position feedback signals to the control system, which facilitates precise position control. In addition, the inner protrusion 2103 of the upper baffle abuts against the upper edge of the lower baffle bracket assembly, using the existing structure as the sealing mating surface, without the need to add additional seals.

[0105] In some implementations, the duct unit also includes two drive motors, the outputs of which are connected to the upper arc-shaped baffle assembly 20 and the lower baffle support assembly, respectively.

[0106] It should be noted that the two drive motors independently drive the upper arc-shaped baffle assembly 20 and the lower baffle bracket assembly, respectively, to achieve completely independent control of the upper air outlet zone and the lower air outlet zone / lower air outlet 120. The two do not interfere with each other and their opening can be adjusted independently according to actual needs. Moreover, the two baffle assemblies can be independently controlled, and in addition to the conventional air supply mode, more intermediate state combinations can be achieved (such as upper air outlet zone half open + lower air outlet 120 half open, upper air outlet zone fully open + lower air outlet 120 half open, etc.), to meet the refined air supply needs in different usage scenarios. It should be noted that the two motors are controlled independently, and the rotation angles of the upper arc-shaped baffle assembly 20 and the lower baffle bracket assembly can be precisely adjusted respectively, so as to achieve independent and precise adjustment of the air volume ratio between the side air outlet and the bottom air outlet. Each motor can be independently equipped with a position sensor to achieve closed-loop control of the position of its respective baffle assembly, resulting in higher control precision and more accurate repeatability.

[0107] like Figure 23-24 As shown, this application provides a method for controlling the air outlet of a ducted air conditioner, applied to the ducted air conditioner described in any of the foregoing embodiments, comprising: S101: Obtain the current mode command of the duct unit; S102: If the current mode command is cooling mode, rotate the upper arc-shaped baffle assembly 20 to open the upper air outlet area, and rotate the middle arc-shaped baffle assembly 30 to drive the bottom baffle 40 to rotate and block the lower air outlet 120 and open the lower air outlet area.

[0108] It should be noted that in cooling mode, the upper arc-shaped baffle assembly 20 opens the upper air outlet area, while the middle arc-shaped baffle assembly 30 drives the bottom baffle 40 to block the lower air outlet 120 and open the lower air outlet area. This allows cold air to be sent out from the upper and lower areas of the side air outlet 110 simultaneously, resulting in a uniform distribution of cold air and preventing excessive concentration in the lower part of the room. This achieves rapid cooling and uniform refrigeration. Furthermore, the cold air naturally sinks after being sent out from the side air outlet 110, forming a natural convection circulation with the indoor hot air, enhancing the airflow and temperature uniformity of the indoor air and improving the comfort of cooling.

[0109] In some embodiments, the instruction to obtain the current mode of the duct unit further includes: If the current mode command is heating mode, then rotate the upper arc-shaped baffle assembly 20 to shield the upper air outlet area, and rotate the middle arc-shaped baffle assembly 30 to drive the bottom baffle 40 to rotate and open the lower air outlet 120 and shield the lower air outlet area.

[0110] It should be noted that in heating mode, the upper arc-shaped baffle assembly 20 is controlled to shield the upper air outlet area, while the middle arc-shaped baffle assembly 30 is controlled to drive the bottom baffle plate 40 to open the lower air outlet 120 and shield the lower air outlet area. This allows hot air to be concentrated and delivered from the lower air outlet 120 at the bottom. The hot air rises naturally and forms a natural convection circulation with the indoor cold air, enhancing the airflow and temperature uniformity of the indoor air. By closing the side air outlet 110 (shielding the upper and lower air outlet areas), all the hot air is forced to be concentrated and discharged from the lower air outlet 120. The air outlet area is reduced and the air outlet speed is increased, allowing the hot air to be pushed to a more distant area of ​​the room. This effectively improves the problem of limited air delivery distance and poor heating effect in distant areas when the traditional side-outlet duct is heating.

[0111] In some embodiments, the instruction to obtain the current mode of the duct unit further includes: If the current mode command is the dual air outlet mode, then rotate the upper arc-shaped baffle assembly 20 to open the upper air outlet area, and rotate the middle arc-shaped baffle assembly 30 to drive the bottom baffle plate 40 to rotate and block part of the lower air outlet 120 and part of the lower air outlet area; If the current mode command is the side-outlet remote air supply mode, then rotate the upper arc-shaped baffle assembly 20 to open part of the upper air outlet area, and rotate the middle arc-shaped baffle assembly 30 to drive the bottom wind deflector 40 to rotate and cover the lower air outlet 120.

[0112] It should be noted that in dual-outlet mode, the upper air outlet is open, part of the lower air outlet 120 is open, and part of the lower air outlet area is blocked, allowing airflow to be discharged simultaneously from the upper part of the side air outlet 110 and the lower air outlet 120. This combines the advantages of long air delivery distance of side air outlets and wide coverage of lower air outlets, making it suitable for scenarios that require rapid and uniform temperature adjustment. By controlling the arc-shaped baffle assembly 30 to block part of the lower air outlet 120 and part of the lower air outlet area, flexible distribution of airflow between the side and lower air outlets can be achieved. Users can select an appropriate airflow ratio based on factors such as room layout and temperature distribution (e.g., ...). Figure 17-19 As shown, as a° increases, the lower air outlet 120 will gradually decrease, and the side air outlet 110 will gradually increase. Adjusting a° so that H1=H2+A, the side air outlet equals the lower air outlet. The specific value may fluctuate due to losses. Therefore, a constant A is proposed, with a value of 0.1-0.2H2). By partially shielding the lower air outlet area, the mutual interference of airflow between the side air outlet and the lower air outlet can be reduced, enabling the two air outlet methods to work together and improve the overall air supply efficiency.

[0113] It should be noted that in the side-discharge far-reaching air delivery mode, the upper arc-shaped baffle assembly 20 partially opens the upper air outlet area, reducing the air outlet area of ​​the side air outlet 110. This increases the air outlet velocity, extends the air delivery distance, and effectively delivers airflow to the far end of the room. The side-discharge far-reaching air delivery mode is suitable for heating scenarios. Hot air is concentrated and delivered from the side air outlet 110, then pushed to the far end of the room and rises naturally, effectively improving the poor heating effect in the far end of the room when using traditional side-discharge duct systems. Furthermore, by continuously adjusting the rotation angle of the upper arc-shaped baffle assembly 20 (e.g., ...), the air delivery can be further enhanced. Figure 13 As shown, the height of the side air outlet is H3, and the horizontal angle is b°. The height of the air outlet is changed to H3 by adjusting b° (the angle b is 30-60°). The air outlet speed and air delivery distance can be steplessly adjusted, and users can choose the most suitable air delivery distance according to the room size and layout.

[0114] It should be noted that by combining cooling mode, heating mode, dual air outlet mode, and side air outlet remote air supply mode, air supply control covering all operating conditions is achieved, meeting the diverse air supply requirements under different seasons, different scenarios, and different user needs; smooth switching between modes can be achieved by continuously adjusting the position of the baffle, avoiding sudden changes in air volume or airflow turbulence during mode switching, thus improving the user experience; the baffle action is automatically controlled by mode commands, eliminating the need for manual adjustment, thereby improving the intelligence level and ease of use of the duct air conditioner.

[0115] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0116] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0117] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A bottom air outlet frame assembly, characterized in that, Includes mounting plate, fixed bracket, movable bracket, air vent fixing plate and air vent adjustment plate, wherein: Two mounting plates are provided and are arranged side by side facing each other in the first direction; The fixed bracket, the movable bracket, and the air vent fixing plate are all arranged sequentially along the second direction and are all disposed between the two mounting plates. The movable bracket is detachably fitted relative to the mounting plate to adjust the distance between the movable bracket and the fixed bracket. The air vent adjustment plate is detachably coupled with the fixed bracket and the movable bracket respectively. The air vent adjustment plate covers the channel formed by the mounting plate, the fixed bracket and the movable bracket. The air vent adjustment plate is provided with multiple vents to adapt to different spacings between the movable bracket and the fixed bracket.

2. The lower air outlet frame assembly according to claim 1, characterized in that, The top of the fixed bracket has a first mounting surface, and the fixed bracket includes a positioning post protruding from the first mounting surface. The top of the movable bracket has a second mounting surface, and the movable bracket includes a buckle protruding from the second mounting surface. The air vent adjustment plate has a positioning hole that mates with the positioning post and a buckle mating hole that mates with the buckle.

3. The lower air outlet frame assembly according to claim 1, characterized in that, Along the direction from the fixed bracket to the air outlet fixing plate, the mounting plate is provided with a first mounting position, a second mounting position and a third mounting position for mounting the movable bracket.

4. The lower air outlet frame assembly according to claim 1, characterized in that, The movable support includes a horizontal section and a vertical section connected to each other. The air outlet adjustment plate cooperates with the horizontal section. The air outlet frame assembly also includes a fixed air guide plate disposed between the two mounting plates. The fixed air guide plate is disposed along the inner edge of the air outlet fixing plate and is directly opposite the vertical section.

5. The lower air outlet frame assembly according to claim 4, characterized in that, The lower air outlet frame assembly further includes a first air guide plate and a second air guide plate. The first air guide plate is rotatably mounted on the movable bracket and is located below the vertical section, with the rotating end of the first air guide plate close to the lower edge of the vertical section. The second air guide plate is rotatably mounted on the mounting plate and is located below the fixed air guide plate, with the rotating end of the second air guide plate close to the lower edge of the fixed air guide plate.

6. The lower air outlet frame assembly according to claim 2, characterized in that, A limiting plate protruding upward from the first mounting surface is formed on the fixed bracket. The limiting plate is inclined relative to the first mounting surface, and the edge of the air outlet adjustment plate is matched and disposed in the angle area formed by the first mounting surface and the limiting plate.

7. A ducted air conditioner, characterized in that, include: The air outlet housing has a side air outlet on the side and a bottom air outlet on the bottom surface; The lower air outlet frame assembly as described in any one of claims 1-6 is disposed on the bottom plate of the air outlet housing, and the mounting plate, the air outlet fixing plate and the movable bracket together form the lower air outlet.

8. The duct air conditioner according to claim 7, characterized in that, The fixed bracket has an inclined guide surface on the side away from the air outlet fixing plate, and the guide surface gradually extends upward along the direction that gradually approaches the air outlet fixing plate.

9. The duct air conditioner according to claim 8, characterized in that, The duct unit also includes a water receiving tray, on the side of the water receiving tray facing the lower air outlet frame assembly, an upwardly inclined guide wall is formed, and the guide wall is attached to the lower side of the guide surface.

10. The duct air conditioner according to claim 9, characterized in that, The guide surface is recessed inside the fixed bracket to form a guide groove, the guide groove extends along the first direction, and the fixed bracket has a drainage channel that connects the guide groove and the water receiving tray.

11. The duct air conditioner according to claim 10, characterized in that, The depth of the guide groove in the vertical direction is 1-2mm, and the opening width of the guide groove on the guide surface is 1-2mm.

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