Air conditioner air outlet structure and air conditioner

Abstract

The application relates to an air conditioner air outlet structure and an air conditioner. The air conditioner air outlet structure comprises a shell, a first air deflector and a second air deflector. The shell is provided with an air return opening, a first air outlet and a second air outlet, and the second air outlet is located below the first air outlet. A centrifugal fan and an evaporator are installed inside the shell. The evaporator is arranged close to the first air outlet. A water collecting tray is installed below the evaporator. The water collecting tray is arranged on the lower part of the shell and corresponds to the evaporator and the second air deflector. The first air deflector can swing around a first preset circular track and swing in the region between the upper edge of the first air outlet and the upper edge of the evaporator. The second air deflector is configured to swing around a second preset circular track and swing in the region between the lower edge of the first air outlet, the lower edge of the evaporator and the position of the water collecting tray close to the second air outlet. The first air deflector and the second air deflector can cooperate to form an air deflection profile. The air deflection profile is used to realize two modes of horizontal front air supply or vertical downward air supply.

Description

Technical Field

[0001] This application relates to the field of air conditioners, and in particular to an air conditioner air outlet structure and an air conditioner. Background Technology

[0002] In the field of HVAC (heating, ventilation and air conditioning), ducted air conditioners are widely used in residential, office and commercial spaces due to their wide air delivery range and stable temperature control. As users' demands for comfort and functionality in air conditioning increase, ducted air conditioners with reversible air outlet directions are gradually becoming the market mainstream. In cooling mode, these products effectively prevent cold air from blowing directly onto people, reducing user discomfort, through horizontal forward airflow. In heating mode, switching to vertical downward airflow utilizes the rising properties of hot air to accelerate indoor air convection and improve heat exchange efficiency, thus meeting the needs of different seasons.

[0003] To achieve the switching of airflow direction, existing technologies generally incorporate air guide structures at the air outlet of air conditioners. Common forms include rotatable air guide vanes, air guide grids, or adjustable air guide blade assemblies. However, these air guide structures often disrupt the original airflow trajectory during the process of changing the airflow direction: on the one hand, the contact between the air guide components and the airflow generates local eddies, leading to airflow energy loss; on the other hand, the gaps between the air guide structures, the windward area of ​​the components themselves, and the abrupt changes in the flow path when the airflow changes direction all create wind resistance, ultimately resulting in airflow loss. Relevant experimental data show that the airflow loss rate of traditional air guide structures is usually high, which not only affects the actual air delivery effect of the air conditioner (such as shortened air delivery distance and decreased indoor temperature uniformity), but also forces the unit to increase energy consumption to maintain the rated air delivery volume, reducing operating efficiency.

[0004] Therefore, the key technical challenge currently facing the duct air conditioning field lies in how to optimize the setting of the air guide structure, so as to minimize the wind resistance and eddy current loss during the airflow process, reduce air volume loss, and thus improve the operating efficiency and energy utilization of the unit, while ensuring flexible air supply from multiple angles (at least covering horizontal forward air supply and vertical downward air supply). This has become a core issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0005] This application provides an air conditioning outlet structure and an air conditioner to solve the technical problems existing in the prior art, which are high wind resistance and eddy current loss and high air volume loss during the airflow process while ensuring flexible air supply from multiple angles (at least covering horizontal forward air supply and vertical downward air supply).

[0006] This utility model provides an air conditioning outlet structure, including: a housing, a first air guide plate, and a second air guide plate. One end of the housing is provided with a return air inlet, and the other end of the housing is provided with a first air outlet. The first air outlet and the return air inlet are located on opposite sides of the housing. The housing also provides a second air outlet, located adjacent to the first air outlet and below it. From the return air inlet towards the first air outlet, a centrifugal fan and an evaporator are sequentially installed inside the housing. The evaporator is positioned close to the first air outlet, and a water collection tray is installed below the evaporator. The centrifugal fan drives air to enter from the return air inlet, pass through the evaporator, and then exit from either the first or second air outlet. One end of the first air guide plate is rotatably connected to the inner wall of the housing, and the other end of the first air guide plate is configured to swing around a first preset circular trajectory. The first air guide plate is configured to swing in the area between the upper edge of the first air outlet and the upper edge of the evaporator. One end of the second air guide plate is rotatably connected to the end of the first air outlet near the second air outlet, and the other end of the second air guide plate is configured to swing around a second preset circular trajectory. The second air guide plate is configured to swing between the lower edge of the first air outlet and the lower edge of the evaporator, and the area of ​​the water receiving tray near the second air outlet. The water receiving tray is located at the lower part of the housing and is positioned corresponding to the evaporator and the second air guide plate. The first air guide plate and the second air guide plate can cooperate to form an air guide surface, which is used to realize two modes: horizontal forward air supply or vertical downward air supply.

[0007] The center of the second preset circular trajectory is located on the lower air outlet sidewall of the first air outlet, and the radius of the second preset circular trajectory is the maximum value at which the second air guide plate does not interfere with the evaporator when it rotates.

[0008] In the vertical downward airflow state, the intersection point of the first air guide plate and the second air guide plate is the first circle center, and a first circle is drawn with the distance from the first circle center to the outer edge of the first air outlet as the radius; a second circle is drawn with the outer edge of the first air outlet as the second circle center and the same radius; the intersection point of the first circle and the second circle on the inner side of the first air outlet is the center of the first preset circular trajectory; the radius of the first preset circular trajectory is the size when the first air guide plate rotates to the upper air outlet side of the first air outlet and is flush with the first air outlet.

[0009] Both the first and second air guide plates are constructed in an arc shape, the radius of the arc shape is the same as the radius of the air guide surface, and the arc length of the arc shape is adapted to the radius of the first preset circular trajectory and the second preset circular trajectory, respectively.

[0010] When in a vertical downward air supply state, both the first air guide plate and the second air guide plate swing to the middle side of the first air outlet and form a seal at that position to block the air supply path of the first air outlet; the air after heat exchange by the evaporator is guided by the air guide surface and discharged from the second air outlet.

[0011] When in a horizontal forward air supply state, the first air guide plate swings to the inner side of the upper air outlet of the first air outlet, and the second air guide plate swings to the upper part of the second air outlet to block the second air outlet; the pivot end of the second air guide plate is located on the lower air outlet side wall of the first air outlet, which is vertically higher than the water receiving tray, and the other end of the second air guide plate is attached to the water receiving tray.

[0012] The width of the second air outlet is 0.5 to 0.7 times that of the width of the first air outlet.

[0013] Wherein, the extended line of the outlet volute of the centrifugal fan and the radius line at the focal point of the air guide profile trajectory line form an angle r, and the range of the angle r is 45°≤r≤65°.

[0014] The air guide surface is determined by three points: the center of the first preset circular trajectory, the center of the second preset circular trajectory, and the intersection point of the first air guide plate and the second air guide plate in the vertical downward air delivery state.

[0015] This application also provides an air conditioner, including the air outlet structure described above.

[0016] The technical solutions provided in this application have the following advantages compared with the prior art: The air conditioning outlet structure and air conditioner provided in this application, through the arc-shaped structure and precise position control of the first and second air guide plates, utilize the oscillation and coordination of the two plates around the first and second preset circular trajectories respectively to form air guide profiles suitable for horizontal forward air supply and vertical downward air supply in two different positions: During heating, the first air guide plate oscillates between the upper edge of the first air outlet and the upper edge of the evaporator to the appropriate position, while the second air guide plate oscillates between the lower edge of the first air outlet, the lower edge of the evaporator, and the corresponding area of ​​the water tray, cooperating with the first air guide plate to form... The air guide surface effectively guides the hot air after heat exchange in the evaporator to converge at the second air outlet located below the first air outlet. At the same time, the second air guide plate is rotatably connected around the end of the first air outlet near the second air outlet, which ensures that it does not interfere with the evaporator when it swings and provides sufficient air guiding space for vertical downward air delivery. This avoids the airflow from being dispersed or generating too much resistance during the guiding process, significantly increases the vertical downward air volume, effectively alleviates the problem of hot air rising and easily accumulating at high altitudes, and allows hot air to be delivered to the ground faster and more concentratedly, thereby enhancing the overall heating effect. Attached Figure Description

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

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 This is a schematic diagram of the air conditioner outlet structure provided in the embodiments of this application; Figure 2 A schematic diagram of the air conditioning outlet structure provided in this application embodiment, in which the air guiding surface R is formed when the air is vertically downward supplied; Figure 3 This is a schematic diagram of the air conditioning outlet structure provided in the embodiment of this application in the horizontal forward air supply state.

[0021] Explanation of reference numerals in the attached figures: 1. Housing; 11. Return air inlet; 12. First air outlet; 13. Second air outlet; 2. Centrifugal fan; 3. Evaporator; 4. Water collection tray; 5. First air guide plate; 6. Second air guide plate; d1. First preset circular trajectory; d2. Second preset circular trajectory; R. Air guide profile. Detailed Implementation

[0022] 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.

[0023] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present 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.

[0024] For ease of description, spatial relative terms may be used in this 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 descriptions used in this text have been explained accordingly.

[0025] The existing technology has the following problems: While ensuring flexible air supply from multiple angles (at least covering horizontal forward air supply and vertical downward air supply), there are technical problems such as high wind resistance and eddy current loss during airflow, as well as high air volume loss.

[0026] To alleviate the above problems, refer to Figures 1-3 This disclosure provides an air conditioning outlet structure, including: a housing 1, a first air guide plate 5, and a second air guide plate 6. One end of the housing 1 has a return air inlet 11, and the other end has a first air outlet 12. The first air outlet 12 and the return air inlet 11 are located on opposite sides of the housing 1. The housing 1 also has a second air outlet 13, located adjacent to the first air outlet 12 and below it. From the return air inlet 11 to the first air outlet 12, a centrifugal fan 2 and an evaporator 3 are sequentially installed inside the housing 1. The evaporator 3 is positioned near the first air outlet 12, and a water collection tray 4 is installed below the evaporator 3. The centrifugal fan 2 drives air to enter from the return air inlet 11, pass through the evaporator 3, and then exit from the first air outlet 12 or the second air outlet 13. One end of the first air guide plate 5 is rotatably connected to the inner wall of the housing 1. The other end of the first air guide plate 5 is configured to swing around a first preset circular trajectory d1. The first air guide plate 5 is configured to swing in the area between the upper edge of the first air outlet 12 and the upper edge of the evaporator 3. One end of the second air guide plate 6 is rotatably connected to the end of the first air outlet 12 near the second air outlet 13. The other end of the second air guide plate 6 is configured to swing around a second preset circular trajectory d2. The second air guide plate 6 is configured to swing in the area between the lower edge of the first air outlet 12 and the lower edge of the evaporator 3, and the area of ​​the water tray 4 near the second air outlet 13. The water tray 4 is located at the lower part of the housing 1 and is set corresponding to the evaporator 3 and the second air guide plate 6. The first air guide plate 5 and the second air guide plate 6 can cooperate to form an air guide profile R. The air guide profile R is used to realize two modes: horizontal forward air supply or vertical downward air supply.

[0027] For example, both the first air guide plate 5 and the second air guide plate 6 are formed by machining arc-shaped sheet metal parts. The arc-shaped surface reduces the resistance loss caused by airflow impact during airflow guidance and prevents the airflow from forming vortices on the surface of the air guide plate. Of course, depending on the needs of the actual application scenario, the two air guide plates can also adopt a planar structure.

[0028] Specifically, one end of the first air guide plate 5 is rotatably connected to the inner wall of the housing 1 at the position corresponding to the upper edge of the first air outlet 12 via a bearing assembly. Its rotation axis is coaxial with the center of the first preset circular trajectory d1, ensuring that the first air guide plate 5 can swing stably along the preset trajectory. One end of the second air guide plate 6 is also rotatably connected to the side wall of the first air outlet 12 near the second air outlet 13 via a bearing assembly. This rotation connection point is the center of the second preset circular trajectory d2. The purpose of this position is to adapt to the installation position of the evaporator 3. Since the evaporator 3 is set close to the first air outlet 12, the rotation axis of the second air guide plate 6 avoids the projection area of ​​the evaporator 3, so that it will not interfere with the structure of the evaporator 3 when swinging at the maximum amplitude. At the same time, it can get as close as possible to the second air outlet 13, providing a basis for airflow guidance when vertically downward air is supplied.

[0029] Furthermore, the center position of the first preset circular trajectory d1 is determined according to the swing requirements of the first air guide plate 5, and its trajectory radius matches the length of the first air guide plate 5, so that the first air guide plate 5 can swing precisely within the area between the upper edge of the first air outlet 12 and the upper edge of the evaporator 3: when swinging close to the upper edge of the first air outlet 12, it can cooperate with the horizontal forward air supply mode; when swinging close to the upper edge of the evaporator 3, it can form a cooperative air guiding relationship with the second air guide plate 6. The radius of the second preset circular trajectory d2 is set according to the length of the second air guide plate 6 and the position parameters of the evaporator 3. Its trajectory range covers the lower edge of the first air outlet 12 and the lower edge of the evaporator 3, as well as the area of ​​the water tray 4 near the second air outlet 13. This ensures that the second air guide plate 6 will not touch the evaporator 3 or the water tray 4 when swinging, and also achieves precise control of the air outlet path by limiting the trajectory range. In other words, the position of the air guide plate is controllable through the fixed-track movement of the mechanical structure. Compared with the swing without trajectory constraints, the preset circular trajectory can ensure the consistency of the position of the air guide plate each time it swings, and avoid the deviation of the air guide path due to shaking, thereby achieving the technical effect of precise position control.

[0030] When the air conditioner is in heating mode, it needs to be switched to vertical downward airflow mode to solve the problem of hot air rising. At this time, the first air guide plate 5 and the second air guide plate 6 achieve coordinated action through the swing of a preset circular trajectory.

[0031] The first air guide plate 5 swings downward along a first preset circular trajectory d1 to a suitable position, specifically near the upper edge of the evaporator 3 and forming a connection with the free end of the second air guide plate 6. This position avoids obstructing the heat exchange area of ​​the evaporator 3 and forms a continuous air guide surface with the second air guide plate 6. The second air guide plate 6 swings upward along a second preset circular trajectory d2, with its free end fitting against the free end of the first air guide plate 5. The arc surfaces of the two plates are joined to form a complete air guide profile R. Because the arc radii of the first and second air guide plates 6 are adapted to the curvature requirements of the air guide profile R, the joined air guide profile R has no obvious bends. When the airflow passes through the evaporator 3 and blows towards the air guide profile R, it will smoothly turn along the arc surface, avoiding airflow loss due to sudden changes in airflow.

[0032] It should be noted that the function of the air guide surface R is to guide the hot air to converge towards the second air outlet 13. Since the second air outlet 13 is located below the first air outlet 12, and the curvature of the air guide surface R is set to point towards the air inlet of the second air outlet 13, the hot air will concentrate and flow towards the second air outlet 13 under the constraint of the air guide surface R, rather than diffuse to the surroundings, thereby achieving the purpose of increasing the vertical downward air volume.

[0033] Thus, through the arc-shaped structure and precise position control of the first air guide plate 5 and the second air guide plate 6, and by utilizing their oscillation coordination around the first preset circular trajectory d1 and the second preset circular trajectory d2 respectively, air guide surfaces R adapted to horizontal forward air supply and vertical downward air supply can be formed in two different positions: During heating, the first air guide plate 5 oscillates between the upper edge of the first air outlet 12 and the upper edge of the evaporator 3 to the appropriate position, and the second air guide plate 6 oscillates between the lower edge of the first air outlet 12, the lower edge of the evaporator 3, and the corresponding area of ​​the water receiving tray 4, cooperating with the first air guide plate 5, and the air guide surfaces formed by the two are... The surface R can effectively guide the hot air after heat exchange in the evaporator 3 to converge towards the second air outlet 13 located below the first air outlet 12. At the same time, the second air guide plate 6 is rotatably connected around the end of the first air outlet 12 near the second air outlet 13. This ensures that it does not interfere with the evaporator 3 when it swings and provides sufficient air guiding space for vertical downward air delivery. This avoids the airflow from being dispersed or generating too much resistance during the guiding process, significantly increases the vertical downward air volume, effectively alleviates the problem of hot air rising and easily accumulating at high altitudes, and allows hot air to be delivered to the ground faster and more concentratedly, thereby enhancing the overall heating effect.

[0034] Considering the determination scheme of the center position and radius of the second preset circular trajectory d2, in the air conditioning outlet structure provided in this embodiment, the center of the second preset circular trajectory d2 is located on the lower air outlet side wall of the first air outlet 12, and the radius of the second preset circular trajectory d2 is the maximum value that does not interfere with the evaporator 3 when the second air guide plate 6 rotates.

[0035] Thus, since the evaporator 3 is located near the first air outlet 12 and within the inner region of the housing 1 corresponding to the first air outlet 12, positioning the center of the circle on the lower air outlet sidewall allows the starting point of the swing trajectory of the second air guide plate 6 to avoid the projection range of the evaporator 3, providing a basic space for its rotational movement. The radius of the second preset circular trajectory d2 is taken as the maximum value that does not interfere with the evaporator 3 when the second air guide plate 6 rotates. In specific implementation, it is necessary to first measure the shortest straight-line distance between the outer contour of the evaporator 3 on the side near the first air outlet 12 and the center of the circle on the lower air outlet sidewall, and then deduct a portion of the assembly safety clearance to determine the maximum radius value. For example, when the distance from the center of the circle to the nearest surface of the evaporator 3 is 150mm, the radius can be set to 145-147mm. This radius setting can ensure that the second air guide plate 6 will not collide with the evaporator 3 when it swings at its maximum amplitude, and can also maximize the use of the internal space of the housing 1 to extend the effective swing range of the second air guide plate 6. This ensures that it can provide sufficient air guiding coverage area when it delivers air vertically downwards, enhances the concentration of airflow guidance, and avoids the problem of air outlet efficiency being affected by the limited movement of the air guide plate due to the small radius. This achieves the unity of structural adaptability and air guiding function.

[0036] For example, the position of maximum swing amplitude can be upward swing in heating mode to cooperate with the first air guide plate 5 to form an air guide surface R, or downward swing in cooling mode to overlap with the water receiving tray 4.

[0037] Considering the scheme for determining the center position and radius of the first preset circular trajectory d1, in the air conditioning outlet structure provided in this embodiment, when the air is vertically downward, the intersection point of the first air guide plate 5 and the second air guide plate 6 is the first circle center, and a first circle is drawn with the distance from the first circle center to the outer edge of the first air outlet 12 as the radius; a second circle is drawn with the outer edge of the first air outlet 12 as the second circle center and the same radius; the intersection point of the first circle and the second circle on the inner side of the first air outlet 12 is the center of the first preset circular trajectory d1; the radius of the first preset circular trajectory d1 is the size when the first air guide plate 5 rotates to the upper air outlet side of the first air outlet 12 and is flush with the first air outlet 12.

[0038] In this way, the junction point is the key matching position for the two air guide plates to form a continuous air guide surface R. A first circle is drawn with the junction point as the first center and the distance from the junction point to the outer edge of the first air outlet 12 as the radius. Then, a second circle is drawn with the same outer edge as the second center and the same radius. The intersection point of the two circles inside the first air outlet 12 is the center of the first preset circular trajectory d1. This geometric positioning method can accurately anchor the swing center of the first air guide plate 5, ensuring that its trajectory matches the movement range of the second air guide plate 6 and the outline of the first air outlet 12, thus avoiding collisions or air guide gaps when the two air guide plates work together.

[0039] The radius of the first preset circular trajectory d1 is set to the size when the first air guide plate 5 rotates to the upper air outlet side of the first air outlet 12 and is flush with the air outlet. In specific implementation, it needs to be adapted and determined according to the height of the first air outlet 12 and the width of the air guide plate. For example, when the horizontal distance from the upper edge of the first air outlet 12 to the intersection point is 120mm, the radius is set to 120mm. This radius setting can ensure that the first air guide plate 5 can be flush with the first air outlet 12 in the horizontal forward air supply mode to reduce air leakage and improve the air outlet concentration. It can also limit its swing amplitude so that it can accurately dock with the second air guide plate 6 to form a smooth air guide surface R when vertically supplying air. At the same time, it avoids the air guide plate from touching the evaporator 3 or other parts of the housing 1 due to the excessive radius, thus achieving a unity of air guide accuracy, structural compatibility and air outlet efficiency.

[0040] Considering the structural schemes of the first air guide plate 5 and the second air guide plate 6, in the air conditioning outlet structure provided in this embodiment, both the first air guide plate 5 and the second air guide plate 6 are constructed in an arc shape. The radius of the arc shape is consistent with the radius of the air guide surface R, and the arc length of the arc shape is adapted to the radius of the first preset circular trajectory d1 and the second preset circular trajectory d2, respectively.

[0041] In this way, the choice of an arc shape, compared to a flat air guide plate, can effectively reduce the eddies and resistance losses formed when the airflow hits the surface of the air guide plate, allowing the airflow to flow smoothly along the arc surface. The arc radius and the air guide surface radius R are kept consistent to ensure that when the two are joined in a vertical downward airflow state, they can be spliced ​​to form a continuous, angle-free integral air guide surface. For example, when the arc radius of the first air guide plate 5 is set to 180mm, the radii of the second air guide plate 6 and the air guide surface R are both 180mm. This way, when the airflow after heat exchange in the evaporator 3 blows towards this combined air guide surface, it will not experience airflow dispersion or airflow loss due to abrupt changes in the curvature, and can be stably guided to the second air outlet 13. Simultaneously, the arc lengths of both are respectively related to the first and second preset circular trajectories d2. The radius of the guide plate is adapted. Specifically, the arc length of the guide plate needs to match its range of motion when swinging around the preset circular trajectory. For example, when the radius of the first preset circular trajectory d1 is 150mm, the arc length of the first guide plate 5 corresponds to the swing arc under that radius. This ensures that when it swings to any position, such as when it is close to the upper edge of the first air outlet 12 when it is horizontally blowing forward, or when it is vertically blowing downward, it connects with the second guide plate 6. The effective air guiding area of ​​the arc shape can accurately cover the airflow path. This avoids insufficient air guiding range due to the arc length being too short, and also prevents structural interference with components such as the evaporator 3 and the shell 1 due to the arc length being too long. Ultimately, this achieves a high degree of matching between the air guiding structure, the motion trajectory, and the air guiding function, thereby improving the stability of airflow guidance and the air outlet effect under different air supply modes.

[0042] Considering the swing position scheme of the air guide plate in the vertical downward air supply state, in the air conditioning air outlet structure provided in this embodiment, when in the vertical downward air supply state, the first air guide plate 5 and the second air guide plate 6 swing to the middle side of the first air outlet 12 and form a seal at that position to block the air supply path of the first air outlet 12; the air after heat exchange by the evaporator 3 is guided by the air guide surface R and discharged from the second air outlet 13.

[0043] In this way, under vertical downward airflow conditions, both the first air guide plate 5 and the second air guide plate 6 swing to the middle position of the first air outlet 12. This middle position is the optimal area determined by considering the size of the first air outlet 12, the installation position of the evaporator 3, and the layout of the second air outlet 13. For example, when the height of the first air outlet 12 is 300mm, the middle side usually refers to the core area about 150mm away from the top and bottom edges. This position ensures that the two air guide plates do not interfere with each other after swinging, and also forms a sealing structure through the contact or overlap of their edges, effectively blocking the horizontal airflow path of the first air outlet 12 and preventing the hot air after heat exchange in the evaporator 3 from exiting through the first air outlet. The leakage from outlet 12 leads to high-altitude accumulation. At the same time, since both air guide plates are arc-shaped and spliced ​​to form a continuous air guide surface R, the hot air blocked inside the first air outlet 12 will be turned along the smooth air guide surface R under the drive of the centrifugal fan 2, and accurately converge to the second air outlet 13 located below the first air outlet 12 and discharged vertically downward. This setting not only uses the sealing structure to achieve forced guidance of the airflow path, but also uses the air guide surface R to reduce the resistance loss during the airflow turning process, so that the hot air can be delivered to the ground in a concentrated and efficient manner, effectively solving the problem of hot air rising during heating, and significantly improving the uniformity and practicality of the heating effect.

[0044] Considering the swing position scheme of the air guide plate in the horizontal forward air supply state, in the air conditioning air outlet structure provided in this embodiment, when in the horizontal forward air supply state, the first air guide plate 5 swings to the inner side of the upper air outlet of the first air outlet 12, and the second air guide plate 6 swings to the upper part of the second air outlet 13 to block the second air outlet 13; the pivot end of the second air guide plate 6 is located on the lower air outlet side wall of the first air outlet 12, which is higher than the water receiving tray 4 in the vertical direction, and the other end of the second air guide plate 6 overlaps the water receiving tray 4.

[0045] Thus, the swing position of the air guide plate in the horizontal forward air supply state is designed to address the sinking characteristics of cold air and the need for water leakage prevention in the cooling mode. The first air guide plate 5 swings to the inner side of the upper air outlet of the first air outlet 12. This position can both avoid the main horizontal air supply channel of the first air outlet 12 and provide auxiliary guidance for the cold air flowing out from the evaporator 3, preventing the airflow from spreading upward and ensuring that the cold air is stably delivered horizontally to blow to a farther area, which meets the comfortable air supply requirement of sinking after being delivered far during cooling. The second air guide plate 6 swings to the upper part of the second air outlet 13 and blocks the air outlet, which can effectively block the cold air from leaking downward, ensuring that all airflow is concentrated and discharged from the first air outlet 12, thereby improving the cooling efficiency. Meanwhile, the pivot end of the second air guide plate 6 is located on the side wall of the lower air outlet of the first air outlet 12, which is slightly higher than the water collection tray 4 in the vertical direction, and its other end is attached to the water collection tray 4. This layout provides a stable fulcrum for the swing of the second air guide plate 6, and also uses the arc surface of the air guide plate to form a drainage channel. If the condensate produced by the evaporator 3 drips onto the second air guide plate 6, it can flow naturally into the water collection tray 4 along its arc surface, avoiding the problem of water leakage of the unit. This achieves the synergy of precise air control and anti-leakage drainage, taking into account both cooling comfort and equipment reliability.

[0046] Considering the width relationship between the two air outlets, in the air conditioning outlet structure provided in this embodiment, the width of the second air outlet 13 is 0.5 to 0.7 times the width of the first air outlet 12.

[0047] Thus, the first air outlet 12, as the main channel for horizontal forward air supply (i.e., cooling mode), needs to be relatively wide to achieve wide-area air supply, ensuring that cold air can evenly cover a farther area and achieve full-space cooling by utilizing its downward characteristics; while the second air outlet 13 is dedicated to vertical downward air supply (i.e., heating mode), and its width is reduced to 0.5 to 0.7 times that of the first air outlet 12. For example, when the width of the first air outlet 12 is 300mm, the width of the second air outlet 13 is 150 to 210mm. According to the principles of fluid mechanics, under the same air volume, a smaller air outlet cross-section can significantly increase the dynamic pressure of the air outlet, enhance the downward penetration of hot air, effectively overcome the physical characteristic of hot air rising, and deliver it to the ground faster and more concentratedly. At the same time, this width ratio can also be adapted to the air guide surface R formed by the air guide plate. The concentrated airflow guided by the air guide surface R can accurately match the narrow size of the second air outlet 13, avoiding air volume loss caused by the dispersion of airflow at the outlet. Moreover, the narrow setting is more in line with the spatial layout of the lower part of the housing 1, and will not occupy too much installation space or cause structural conflicts with components such as the water tray 4 due to the second air outlet 13 being too wide. Ultimately, this ratio relationship realizes the functional distinction between wide air supply and narrow air supply under the two air supply modes, taking into account both cooling comfort and heating effectiveness.

[0048] Considering the angle between the air guide surface R formed by the two air guide plates and the centrifugal fan 2, in the air conditioning outlet structure provided in this embodiment, the extended line of the outlet volute of the centrifugal fan 2 and the radius line at the focal point of the trajectory line of the air guide surface R form an angle r, and the range of the angle r is 45°≤r≤65°.

[0049] Thus, the extension line of the outlet volute represents the natural flow path of the airflow discharged from the centrifugal fan 2, and the trajectory line of the air guide surface R is the turning path of the airflow after being guided. The radius line at the intersection of the two is directly related to the curvature direction of the air guide surface R, and the size of the included angle r determines the smoothness of the transition of the airflow from the fan outlet to the air guide surface R. If r is less than 45°, the airflow will form a vortex at the focal point due to the abrupt turn, increasing resistance loss and causing a decrease in airflow. If r is greater than 65°, the guiding force of the air guide surface R is insufficient, and the airflow is prone to deviating from the preset path and cannot effectively converge to the second air outlet 13. The angle range of 45°-65° allows the airflow to enter the air guide surface R along a gentle transition path after flowing out of the volute, which avoids energy loss caused by airflow impact and ensures the precise constraint of the airflow by the air guide surface R. Especially in the vertical downward air supply mode (i.e., heating mode), it can maximize the retention of airflow kinetic energy, enhance the downward penetration of hot air, and alleviate the problem of hot air rising. At the same time, this angle range is compatible with the volute curvature of the conventional centrifugal fan 2 and the arc radius setting of the air guide surface R, without the need for special modifications to the fan or air guide structure, achieving a unity of optimal function and structural compatibility.

[0050] Considering the composition scheme of the air guide surface R, in the air conditioning outlet structure provided in this embodiment, the air guide surface R is determined by three points: the center of the first preset circular trajectory d1, the center of the second preset circular trajectory d2, and the intersection point of the first air guide plate 5 and the second air guide plate 6 in the vertical downward air supply state.

[0051] Thus, the center of the first preset circular trajectory d1 and the center of the second preset circular trajectory d2 are the core rotation references for the swing of the first air guide plate 5 and the second air guide plate 6, respectively, which directly determine the range of motion trajectories of the two air guide plates; while the junction point when vertically downward air is delivered is the key cooperation position for the two air guide plates to form a coordinated air guide, and is the core connection point for the air guide surface R to play the role of airflow guidance. By using these three key reference points to jointly determine the air guide surface R, it is possible to ensure that the curvature of the surface is highly compatible with the arc structure and swing trajectory of the two air guide plates. For example, in actual assembly, by positioning these three points and fitting them to form an arc-shaped air guide surface, the first air guide plate 5 can swing around its own center to the intersection point, and its arc edge can fit seamlessly with the air guide surface R. The same applies to the second air guide plate 6, thus splicing together a continuous and seamless overall air guide channel. At the same time, this air guide surface R, which is determined based on the motion reference points, can accurately constrain the airflow direction and avoid airflow leakage or increased resistance caused by misalignment of the surface and the air guide plate's motion trajectory. It ensures that the hot air after heat exchange in the evaporator 3 is smoothly guided along the surface to the second air outlet 13, effectively enhancing the airflow concentration and air delivery efficiency when vertically delivering air, and achieving a high degree of unity between the motion logic and functional requirements of the air guide structure.

[0052] This disclosure also provides an air conditioner including the above-described air conditioner air outlet structure, which can achieve all the effects of the above-described air conditioner air outlet structure, and will not be described in detail here.

[0053] To better understand the air conditioner outlet structure and air conditioner solution provided in the embodiments of this disclosure, the following exemplary examples are given: refer to Figure 1The air conditioning outlet structure of this embodiment may include: a return air inlet 11, a housing 1, a centrifugal fan 2, an evaporator 3, a first air outlet 12, a rotation trajectory 1 (i.e., a first preset circular trajectory d1), a first air guide plate 5, a rotation trajectory 2 (i.e., a second preset circular trajectory d2), a second air guide plate 6, a second air outlet 13, a downward air supply guide trajectory R, ​​and a water collection tray 4. The centrifugal fan 2 drives air to enter from the return air inlet 11, passes through the evaporator 3, and is blown out from the first air outlet 12 or the second air outlet 13. The first air guide plate 5 and the second air guide plate 6 oscillate around the center of the rotation trajectory, which are circular trajectories d1 and d2 around the rotational motion. The center of the second preset circular trajectory d2 of the second air guide plate 6 is located on the side wall of the lower air outlet of the first air outlet 12. Its radius d2 is optimally taken as the maximum value that ensures no interference with the evaporator 3 during rotation. Taking the largest size of d2 can ensure that the larger size of the second air outlet 13 is covered when the air is supplied horizontally forward. The larger size of the second air outlet 13 ensures better air outlet conditions when the air is supplied vertically downward, which is conducive to increasing the vertical downward air volume and enhancing the heating effect. In the vertical downward air supply working state, the intersection point of the first air guide plate 5 and the second air guide plate 6 is set on the inner wall line of the first air outlet 12. This ensures a large air guiding space when the air is supplied vertically downward, while also ensuring that the first air guide plate 5 and the second air guide plate 6 do not exceed the first air outlet 12. A circle is drawn with the intersection point of the first air guide plate 5 and the second air guide plate 6 in the vertical downward air supply working state as the center, and the radius from the intersection point to the outer edge of the first air outlet 12 as the radius. Simultaneously, a circle is drawn with the outer edge of the first air outlet 12 as the center, and the radius from the intersection point to the outer edge of the first air outlet 12 as the radius. The intersection point of these two circles with equal radii at the inner side of the first air outlet 12 is the center of circle d1. The radius of d1 is taken to be flush with the air outlet when rotated to the upper air outlet side of the first air outlet 12. The centers of circles d1 and d2, and the intersection point of the first air guide plate 5 and the second air guide plate 6 in the vertical downward air supply working state, together with the intersection point of the first air guide plate 5 and the second air guide plate 6, determine circle R. The first air guide plate 5 and the second air guide plate 6 are preferably set in an arc shape, with the arc radius the same as circle R, and the arc length taken as the radius of circles d1 and d2. The advantage of this setting is that the curvature of the air guiding surface formed by the first air guide plate 5 and the second air guide plate 6 is smooth and without abrupt changes in the vertical downward air supply working state, which is beneficial to the air guiding effect and thus enhances the heating effect. An angle r is formed at the intersection of the extended line of the outlet volute of centrifugal fan 2 and the radius line of the trajectory line of the air guide surface R.

[0054] refer to Figure 2In the vertical downward airflow mode, due to the physical property of hot air rising during heating, when the unit uses horizontal front airflow, hot air tends to accumulate at high altitudes and does not easily reach the ground, affecting the heating effect. Therefore, the vertical downward airflow mode is beneficial to deliver hot air to the ground as quickly and far as possible, improving the heating effect. When the unit is heating and the airflow blows directly to the ground, the first air guide plate 5 rotates around its rotation trajectory to the middle side of the first air outlet 12, and at the same time, the second air guide plate 6 rotates around its rotation trajectory to the middle side of the first air outlet 12, forming a seal with the first air guide plate 5 at the middle position of the first air outlet 12, blocking the airflow path of the first air outlet 12. In this way, the centrifugal fan 2 drives the air to enter from the return air inlet 11, and after heat exchange in the evaporator 3, it is blown towards the air guide surface R formed by the first air guide plate 5 and the second air guide plate 6. Under the action of the air guide surface R, it is turned and discharged from the unit from the second air outlet 13, forming the unit's air supply.

[0055] refer to Figure 3 In horizontal forward airflow mode, the unit uses horizontal forward airflow during cooling, preventing the air from blowing directly onto people and improving comfort. Furthermore, due to the physical property of cold air sinking, when using horizontal forward airflow, the cooled air can be blown further away, and after sinking again, it achieves a full-space cooling effect, further improving cooling comfort. When the unit requires horizontal forward airflow for cooling, the first air guide plate 5 rotates around its trajectory to the inner side of the first air outlet 12; simultaneously, the second air guide plate 6 rotates around its trajectory to the upper part of the second air outlet 13 and blocks the second air outlet 13. In this way, the centrifugal fan 2 drives air to enter from the return air inlet 11, exchanges heat through the evaporator 3, and then exits the unit from the first air outlet 12, forming the unit's airflow. At this time, the shaft end of the second air guide plate 6 is located on the side wall of the lower air outlet of the first air outlet 12, which is slightly higher than the water receiving tray 4 in the vertical direction, and the other end is attached to the water receiving tray 4. This makes it convenient for condensate to flow into the water receiving tray 4 along the arc surface of the second air guide plate 6, thus preventing the unit from leaking water.

[0056] Further, refer to Figure 2 In the vertical downward airflow configuration, the inner curvature of the airflow guide surface R formed by the first air guide plate 5 and the second air guide plate 6 directs the airflow directly downwards, reducing airflow loss caused by direct impact of the airflow onto the air guide plates. To enhance the airflow guiding effect, in this embodiment, the r angle is optimally set at 45°≤r≤65°. The width of the second air outlet 13 is smaller than that of the first air outlet 12. Combined with the arc setting, this concentrates the airflow, which helps to increase the outlet dynamic pressure and allows the airflow to travel further.

[0057] In this embodiment, the width of the second air outlet 13 is optimally set to be 0.5 to 0.7 times the width of the first air outlet 12. This embodiment uses a single air guide plate to change the airflow direction. In air conditioning applications, different airflow directions are required for cooling and heating. During implementation, different operating modes combined with different airflow directions are all within the protection scope of this embodiment.

[0058] 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.

[0059] 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.

[0060] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present 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 present 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. An air outlet structure of an air conditioner, characterized by comprising: include: The housing has a return air inlet at one end and a first air outlet at the other end. The first air outlet and the return air inlet are located on opposite sides of the housing. The housing also has a second air outlet, which is located adjacent to the first air outlet and below the first air outlet. From the direction of the return air inlet to the first air outlet, a centrifugal fan and an evaporator are sequentially installed inside the housing. The evaporator is located near the first air outlet, and a water collection tray is installed below the evaporator. The centrifugal fan is used to drive air to enter from the return air inlet and pass through the evaporator before being blown out from the first air outlet or the second air outlet. The first air guide plate has one end rotatably connected to the inner wall of the housing, and the other end of the first air guide plate is configured to swing around a first preset circular trajectory. The first air guide plate is configured to swing in the area between the upper edge of the first air outlet and the upper edge of the evaporator. The second air guide plate has one end rotatably connected to the first air outlet near the second air outlet, and the other end of the second air guide plate is configured to swing around a second preset circular trajectory. The second air guide plate is configured to swing between the lower edge of the first air outlet and the lower edge of the evaporator, and the area of ​​the water receiving tray near the second air outlet. The water receiving tray is located at the lower part of the housing and is positioned corresponding to the evaporator and the second air guide plate. The first air guide plate and the second air guide plate can cooperate to form an air guide surface, which is used to realize two modes: horizontal forward air supply or vertical downward air supply.

2. The air conditioning outlet structure according to claim 1, characterized in that, The center of the second preset circular trajectory is located on the lower air outlet sidewall of the first air outlet, and the radius of the second preset circular trajectory is the maximum value at which the second air guide plate does not interfere with the evaporator when it rotates.

3. The air conditioner outlet structure according to claim 1, characterized in that, When the air is supplied vertically downwards, the intersection point of the first air guide plate and the second air guide plate is the first center of the circle. A first circle is drawn with the distance from the first center of the circle to the outer edge of the first air outlet as the radius. A second circle is drawn with the outer edge of the first air outlet as the second center and the same radius. The intersection point of the first circle and the second circle on the inner side of the first air outlet is the center of the first preset circular trajectory. The radius of the first preset circular trajectory is the size when the first air guide plate rotates to the upper air outlet side of the first air outlet and is flush with the first air outlet. 4.The air conditioning outlet structure according to claim 1, characterized in that, Both the first and second air guide plates are constructed in an arc shape, the radius of the arc shape is the same as the radius of the air guide surface, and the arc length of the arc shape is adapted to the radius of the first preset circular trajectory and the second preset circular trajectory, respectively.

5. The air conditioner outlet structure according to claim 1, characterized in that, When in a vertical downward air supply state, both the first air guide plate and the second air guide plate swing to the middle side of the first air outlet and form a seal at that position to block the air supply path of the first air outlet. After heat exchange in the evaporator, the air is guided by the air guide surface and discharged from the second air outlet.

6. The air conditioner outlet structure according to claim 1, characterized in that, When in the horizontal forward air supply state, the first air guide plate swings to the inner side of the upper air outlet of the first air outlet, and the second air guide plate swings to the upper part of the second air outlet to block the second air outlet; the pivot end of the second air guide plate is located on the lower air outlet side wall of the first air outlet, which is higher than the water receiving tray in the vertical direction, and the other end of the second air guide plate is attached to the water receiving tray. 7.The air conditioning outlet structure according to claim 1, characterized in that, The width of the second air outlet is 0.5 to 0.7 times that of the width of the first air outlet. 8.The air conditioning outlet structure according to claim 1, wherein The extended line of the outlet volute of the centrifugal fan forms an angle r with the radius line at the focal point of the trajectory line of the air guide surface, and the range of the angle r is 45°≤r≤65°. 9.The air conditioning outlet structure according to claim 1, wherein The air guide profile is determined by three points: the center of the first preset circular trajectory, the center of the second preset circular trajectory, and the intersection point of the first air guide plate and the second air guide plate in the vertical downward air delivery state.

10. An air conditioner, characterized in that, Includes the air conditioning outlet structure as described in any one of claims 1-9.

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