Reversible air outlet air conditioner indoor unit and air conditioner

Abstract

This invention provides a reversible airflow indoor unit and an air conditioner. The reversible airflow indoor unit includes a housing, fan blades, and a flow guide structure. The housing has a first air outlet and a second air outlet. The fan blades drive airflow through the first air outlet into the housing and out through the second air outlet. At this time, the flow guide structure can move towards the second air outlet to a second position to guide the airflow blown by the fan blades to the second air outlet. The fan blades can also drive airflow through the second air outlet into the housing and out through the first air outlet. At this time, the flow guide structure can move towards the first air outlet to a first position to guide the airflow blown by the fan blades to the first air outlet. The first position is closer to the first air outlet than the second position, and the second position is closer to the second air outlet than the first position. This invention can increase the airflow in two airflow modes and effectively solves the problem in existing reversible air conditioners that cannot increase the airflow according to different airflow directions, resulting in airflow attenuation.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to an indoor air conditioning unit and an air conditioner with reversible air outlet. Background Technology

[0002] With the improvement of living standards, air conditioners, as indispensable electrical appliances in homes and commercial environments, are receiving increasing attention for their performance and efficiency. Traditional air conditioning systems, especially those using cross-flow ducts, often maintain a fixed airflow direction in different operating modes (such as cooling and heating). This can cause uneven temperature distribution, where, in heating mode, cool air is heated first but cannot quickly diffuse to the lower part of the room. Similarly, in cooling mode, cool air may concentrate too much in the lower part of the room, failing to effectively cool the entire space.

[0003] Currently, existing air conditioners use relatively fixed methods to deliver air into the room. These methods include directing airflow in a specific direction, automatically controlling air guides or louvers to circulate the air, or using human sensors to direct the airflow away from people to avoid direct airflow and discomfort. In short, existing air conditioners have relatively simple air delivery methods.

[0004] Currently, there are air conditioners that can reverse airflow, but they cannot increase the air volume according to different airflow directions. In particular, when the airflow is reversed, the air volume usually decreases, resulting in reduced airflow and decreased indoor comfort.

[0005] Because existing reversible air conditioning systems have technical problems such as the inability to increase air volume according to different air supply directions, resulting in air volume attenuation, this utility model studies and designs a reversible air supply indoor unit and air conditioner. Utility Model Content

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the defect of existing reversible air conditioning systems that cannot increase air volume according to different air supply directions, resulting in air volume attenuation, and thus provide an air conditioning indoor unit and air conditioner with reversible air supply.

[0007] To address the aforementioned problems, this utility model provides a reversible air outlet indoor unit for an air conditioner, comprising:

[0008] The housing, fan blades, and air guide structure are provided, wherein the housing has a first air outlet and a second air outlet, and the first air outlet and the second air outlet are disposed on different surfaces of the housing.

[0009] The fan blade can drive airflow through the first air inlet into the housing and out through the second air inlet. At this time, the airflow guiding structure can move towards the second air inlet to a second position to guide the airflow blown by the fan blade to the second air inlet, thereby increasing the airflow volume of the second air inlet. The fan blade can also drive airflow through the second air inlet into the housing and out through the first air inlet. At this time, the airflow guiding structure can move towards the first air inlet to a first position to guide the airflow blown by the fan blade to the first air inlet, thereby increasing the airflow volume of the first air inlet. The first position is closer to the first air inlet than the second position, and the second position is closer to the second air inlet than the first position.

[0010] In some implementations...

[0011] The flow guiding structure includes a first flow guiding structure and a second flow guiding structure. The first flow guiding structure is positioned closer to the first air outlet than the second flow guiding structure, and the second flow guiding structure is positioned closer to the second air outlet than the first flow guiding structure. The first flow guiding structure and the second flow guiding structure are connected as one unit. The first flow guiding structure can guide gas towards the first air outlet. The first flow guiding structure is a ring structure, and the flow area inside the ring gradually increases from the end away from the first air outlet to the end facing the first air outlet. The second flow guiding structure can guide gas towards the second air outlet. The second flow guiding structure is also a ring structure, and the flow area inside the ring gradually increases from the end away from the second air outlet to the end facing the second air outlet.

[0012] In some implementations...

[0013] A third flow guiding structure is connected between the first flow guiding structure and the second flow guiding structure. The third flow guiding structure is a cylindrical structure. One axial end of the first flow guiding structure is connected to one axial end of the third flow guiding structure, and the other axial end of the first flow guiding structure extends away from the third flow guiding structure. The first flow guiding structure has a flared structure from one axial end to the other axial end, and the cross-sectional area inside its annular structure gradually increases. One axial end of the second flow guiding structure is connected to the other axial end of the third flow guiding structure, and the other axial end of the second flow guiding structure extends away from the third flow guiding structure. The second flow guiding structure has a flared structure from one axial end to the other axial end, and the cross-sectional area inside its annular structure gradually increases.

[0014] In some implementations...

[0015] Both the fan blade and the air guide structure are disposed inside the housing. The first air outlet is disposed on the upper end face of the housing, and the second air outlet is disposed on the lower end face of the housing. The upper end face and the lower end face are two opposite faces. The first air guide structure is an upper air guide ring, and the second air guide structure is a lower air guide ring. The upper air guide ring is located above the lower air guide ring.

[0016] In some implementations...

[0017] The fan blade is an axial flow fan blade with its axis in the vertical direction. The lower end of the fan blade is connected to a motor to drive the axial flow fan blade to rotate.

[0018] At the first position, the flow guide structure covers the upper part of the axial flow fan blade inside the flow guide structure;

[0019] The upper end of the first flow guide structure is higher than the upper end of the axial flow fan blade by a first preset distance, and the lower end of the second flow guide structure is higher than the lower end of the axial flow fan blade by a second preset distance. The upper end of the axial flow fan blade is located between the upper end of the first flow guide structure and the lower end of the second flow guide structure. Both the first preset distance and the second preset distance are greater than 0.

[0020] In some implementations...

[0021] The axial flow fan blade includes a leading edge, which is the edge of the axial flow fan blade closest to the motor shaft.

[0022] At the first position, the guide structure covers the leading edge of the fan blade inside the guide structure.

[0023] In some implementations...

[0024] At the second position, the flow guide structure covers the leading edge of the fan blade inside the flow guide structure;

[0025] The upper end of the first flow guide structure is lower than the upper end of the axial flow fan blade by a third preset distance, and the lower end of the second flow guide structure is higher than the lower end of the axial flow fan blade by a fourth preset distance, wherein both the third preset distance and the fourth preset distance are greater than 0;

[0026] Furthermore, during the movement of the flow guide structure between the first position and the second position, the flow guide structure always covers the leading edge of the fan blade inside the flow guide structure.

[0027] In some implementations...

[0028] The distance between the first position and the second position along the axial direction of the axial flow fan blade is L, and the axial height of the axial flow fan blade is H, with L = 1 / 3H to 1 / 2H.

[0029] In some implementations...

[0030] It also includes a heat exchanger, an upper air guide plate, a lower air guide plate, a front panel, and a rear panel. The heat exchanger is disposed inside the housing. The upper air guide plate is disposed at the first air outlet at the upper end. The lower air guide plate is disposed at the second air outlet at the lower end of the housing. The front panel is located on the front end face of the housing, and the rear panel is located on the rear end face of the housing.

[0031] This utility model also provides an air conditioner, which includes the aforementioned reversible air outlet indoor unit.

[0032] The reversible air outlet indoor unit and air conditioner provided by this utility model have the following beneficial effects:

[0033] This invention utilizes first and second air vents located on different surfaces of the casing of a reversible air-discharge air conditioner indoor unit. This enables a reversible air intake and exhaust structure, allowing air to enter through the first vent and exit through the second vent, and vice versa. Furthermore, a movable guide structure is incorporated. When the fan blades drive airflow through the first vent into the casing and exit through the second vent, the guide structure moves towards the second vent to a second position to increase the airflow rate from the second vent, thereby increasing the airflow volume in the first-vent-in, second-vent-out mode. Conversely, when the fan blades drive airflow through the second vent into the casing and exit through the first vent, the guide structure moves towards the first vent to a first position to increase the airflow rate from the first vent, thereby increasing the airflow volume in the second-vent-in, first-vent-out mode. This system features a large air volume output and a flexible airflow direction adjustment mechanism, enabling reversible airflow up and down to adapt to different user needs. By changing the rotation direction of the axial fan blades and increasing the inlet width of the corresponding side guide ring, the system increases the air inlet area, achieving a high-volume, low-noise, and high-efficiency airflow system. It also includes an indoor air conditioning unit capable of reversible airflow up and down, avoiding the need for complex and costly airflow systems in traditional air conditioners. Furthermore, this system conforms to the principle of hot air naturally rising and cold air naturally sinking, better achieving whole-house air circulation while improving the operating efficiency of the air conditioning system and enhancing user comfort. It effectively solves the problem of existing reversible air conditioning systems failing to increase airflow according to different airflow directions, leading to airflow attenuation. Attached Figure Description

[0034] Figure 1This is a structural diagram of the overall appearance of the reversible air outlet indoor unit of the air conditioner according to this utility model;

[0035] Figure 2 This is an internal structural diagram of the reversible air outlet indoor unit of the present invention when the air is inlet at the bottom and outlet at the top.

[0036] Figure 3 This is an internal structural diagram of the reversible air outlet indoor unit of this utility model when the air is inlet at the top and outlet at the bottom.

[0037] Figure 4 This is a front view of the flow guiding structure of this utility model;

[0038] Figure 5 This is a three-dimensional structural diagram of the flow guiding structure of this utility model;

[0039] Figure 6 This is a top view of the reversible air-discharge indoor unit of the air conditioner of this utility model when the air is inlet at the bottom and outlet at the top.

[0040] Figure 7 This is a top view of the reversible air-discharge indoor unit of this utility model when the air is inlet at the top and outlet at the bottom.

[0041] The reference numerals in the attached figures are as follows:

[0042] 1. Shell; 2. Fan blade; 3. Air guide structure; 31. First air guide structure; 32. Second air guide structure; 33. Third air guide structure; 4. First air outlet; 5. Second air outlet; 6. Motor; 7. Heat exchanger; 8. Upper air guide plate; 9. Lower air guide plate; 10. Front panel; 11. Rear panel; 12. Evaporator side plate; 13. Water collection tray; 14. Leading edge of fan blade; 15. Gear; 16. Rack. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0049] like Figure 1-7 As shown, this utility model provides a reversible air outlet indoor unit for air conditioning, which includes:

[0050] The housing 1, the fan blade 2, and the air guide structure 3 are provided. The housing 1 has a first air outlet 4 and a second air outlet 5, which are disposed on different surfaces of the housing 1.

[0051] The fan blade 2 can drive airflow through the first air inlet 4 into the housing 1 and out through the second air inlet 5. At this time, the guide structure 3 can move toward the second air inlet 5 to a second position to guide the airflow blown by the fan blade 2 to the second air inlet 5 and increase the airflow volume of the second air inlet 5. The fan blade 2 can also drive airflow through the second air inlet 5 into the housing 1 and out through the first air inlet 4. At this time, the guide structure 3 can move toward the first air inlet 4 to a first position to guide the airflow blown by the fan blade 2 to the first air inlet 4 and increase the airflow volume of the first air inlet 4. The first position is closer to the first air inlet 4 than the second position, and the second position is closer to the second air inlet 5 than the first position.

[0052] This invention utilizes first and second air vents located on different surfaces of the casing of a reversible air-discharge air conditioner indoor unit. This enables a reversible air intake and exhaust structure, allowing air to enter through the first vent and exit through the second vent, and vice versa. Furthermore, a movable guide structure is incorporated. When the fan blades drive airflow through the first vent into the casing and exit through the second vent, the guide structure moves towards the second vent to a second position to increase the airflow rate from the second vent, thereby increasing the airflow volume in the first-vent-in, second-vent-out mode. Conversely, when the fan blades drive airflow through the second vent into the casing and exit through the first vent, the guide structure moves towards the first vent to a first position to increase the airflow rate from the first vent, thereby increasing the airflow volume in the second-vent-in, first-vent-out mode. This system features a large air volume output and a flexible airflow direction adjustment mechanism, enabling reversible airflow up and down to adapt to different user needs. By changing the rotation direction of the axial fan blades and increasing the inlet width of the corresponding side guide ring, the system increases the air inlet area, achieving a high-volume, low-noise, and high-efficiency airflow system. It also includes an indoor air conditioning unit capable of reversible airflow up and down, avoiding the need for complex and costly airflow systems in traditional air conditioners. Furthermore, this system conforms to the principle of hot air naturally rising and cold air naturally sinking, better achieving whole-house air circulation while improving the operating efficiency of the air conditioning system and enhancing user comfort. It effectively solves the problem of existing reversible air conditioning systems failing to increase airflow according to different airflow directions, leading to airflow attenuation.

[0053] In some implementations...

[0054] The flow guiding structure 3 includes a first flow guiding structure 31 and a second flow guiding structure 32. The first flow guiding structure 31 is positioned closer to the first air outlet 4 relative to the second flow guiding structure 32, and the second flow guiding structure 32 is positioned closer to the second air outlet 5 relative to the first flow guiding structure 31. The first flow guiding structure 31 and the second flow guiding structure 32 are connected as one unit. The first flow guiding structure 31 can guide gas towards the first air outlet 4. The first flow guiding structure 31 is a ring structure, and the flow area inside the ring gradually increases from the end away from the first air outlet 4 to the end facing the first air outlet 4. The second flow guiding structure 32 can guide gas towards the second air outlet 5. The second flow guiding structure 32 is also a ring structure, and the flow area inside the ring gradually increases from the end away from the second air outlet 5 to the end facing the second air outlet 5.

[0055] This is a preferred structural form of the airflow guiding structure of this utility model. It includes first and second airflow guiding structures, both of which are annular structures. Air flows through the annular structures. In particular, both airflow guiding structures are flared structures. The flow area of ​​the first airflow guiding structure towards the first air outlet is increased, and the flow area of ​​the second airflow guiding structure towards the second air outlet is increased. This allows the first airflow guiding structure to enhance the airflow guiding effect of the first air outlet and increase the airflow volume of the first air outlet when it moves towards the first air outlet. Similarly, the second airflow guiding structure to enhance the airflow guiding effect of the second air outlet and increase the airflow volume of the second air outlet when it moves towards the second air outlet. This achieves the effect of increasing the airflow volume in two different airflow modes and prevents the airflow volume from decreasing when switching modes.

[0056] In some implementations...

[0057] A third flow guide structure 33 is connected between the first flow guide structure 31 and the second flow guide structure 32. The third flow guide structure 33 is a cylindrical structure. One axial end of the first flow guide structure 31 is connected to one axial end of the third flow guide structure 33, and the other axial end of the first flow guide structure 31 extends away from the third flow guide structure 33. The first flow guide structure 31 has a flared structure from one axial end to the other axial end, and the cross-sectional area inside its annular structure gradually increases. One axial end of the second flow guide structure 32 is connected to the other axial end of the third flow guide structure 33, and the other axial end of the second flow guide structure 32 extends away from the third flow guide structure 33. The second flow guide structure 32 has a flared structure from one axial end to the other axial end, and the cross-sectional area inside its annular structure gradually increases.

[0058] The present invention also connects the first and second guide rings into one unit through the aforementioned third guide structure. The third guide structure is preferably a cylindrical structure, which is connected to the first and second guide rings with flared ends. This allows the airflow entering from the first guide ring to be accelerated and then enter the third guide ring for rectification. After being depressurized and slowed down by the second guide ring, it is then directed to the second air outlet. Similarly, the airflow entering from the second guide ring is accelerated and then enters the third guide ring for rectification. After being depressurized and slowed down by the first guide ring, it is then directed to the first air outlet. This achieves the effect of increasing the airflow volume for both upward and downward airflow, preventing the airflow from decreasing when switching modes.

[0059] like Figure 4 The figure shown is a three-dimensional structural schematic diagram of the guide ring of the present invention.

[0060] like Figure 5 The diagram shown is a front view of the airflow guide ring of the present invention.

[0061] The cross-sectional profile of the guide ring of the present invention can be divided into three segments: segment A (first guide structure 31) at the top, segment B (third guide structure 33) in the middle, and segment C (second guide structure 32) at the bottom. Among them, segments A and C are curved segments, and segment B is a straight segment.

[0062] The motion mechanism of this invention can be a gear and rack mechanism or a ball screw mechanism, or any other mechanism capable of achieving linear motion. This invention features a rack structure on the outer wall of the guide ring, which, together with the gear, forms a gear and rack mechanism.

[0063] In some implementations...

[0064] The fan blade 2 and the air guide structure 3 are both disposed inside the housing 1. The first air outlet 4 is disposed on the upper end face of the housing 1, and the second air outlet 5 is disposed on the lower end face of the housing 1. The upper end face and the lower end face are two opposite faces. The first air guide structure 31 is an upper air guide ring, and the second air guide structure 32 is a lower air guide ring. The upper air guide ring is located above the lower air guide ring.

[0065] This is a preferred structural form of the first and second air inlets and the first and second air guiding structures of this utility model. The first air inlet is preferably located on the upper end face of the shell to form an upper air inlet, and the second air inlet is preferably located on the lower end face of the shell to form a lower air inlet. The first and second air guiding structures are preferably in the form of upper and lower air guiding rings. When air enters from the upper air inlet, the air guiding structure moves downward as a whole to increase the air volume of the lower air inlet. When air enters from the lower air inlet, the air guiding structure moves upward as a whole to increase the air volume of the upper air inlet. This realizes the switching of the upper and lower air outlets of the reversible air outlet air conditioner and avoids the air volume attenuation during the switching.

[0066] In some implementations...

[0067] The fan blade 2 is an axial flow fan blade with its axis in the vertical direction. The lower end of the fan blade 2 is connected to a motor 6 to drive the axial flow fan blade to rotate.

[0068] At the first position, the flow guide structure 3 covers the upper part of the axial flow fan blade inside the flow guide structure;

[0069] The upper end of the first flow guiding structure 31 is higher than the upper end of the axial flow fan blade by a first preset distance, and the lower end of the second flow guiding structure 32 is higher than the lower end of the axial flow fan blade by a second preset distance. The upper end of the axial flow fan blade is located between the upper end of the first flow guiding structure 31 and the lower end of the second flow guiding structure 32. Both the first preset distance and the second preset distance are greater than 0.

[0070] This is a further preferred structural form of the reversible air outlet air conditioner indoor unit of this utility model, as well as the preferred positional relationship between the two air guide structures and the fan blades, such as... Figure 2 As shown, the airflow guiding structure composed of the two encloses the upper end of the fan blades, which can increase the flow rate of the downward-intake airflow, especially when the airflow is downward-intake and upward-outtake.

[0071] In some implementations...

[0072] The axial flow fan blade includes a leading edge 14, which is the edge of the axial flow fan blade closest to the motor shaft of the motor 6.

[0073] At the first position, the guide structure 3 covers the leading edge 14 of the fan blade inside the guide structure 3.

[0074] The present invention, by wrapping the leading edge of the axial flow fan blade inside the guide structure in the first position, can prevent the guide structure from failing to concentrate the gas, and ensure that while effectively concentrating the gas, it can also move towards the first air outlet to the first position, thereby effectively increasing the air volume at the first air outlet.

[0075] In some implementations...

[0076] At the second position, the flow guide structure 3 covers the leading edge 14 of the fan blade inside the flow guide structure 3;

[0077] The upper end of the first flow guiding structure 31 is lower than the upper end of the axial flow fan blade by a third preset distance, and the lower end of the second flow guiding structure 32 is higher than the lower end of the axial flow fan blade by a fourth preset distance. Both the third preset distance and the fourth preset distance are greater than 0.

[0078] Furthermore, during the movement of the flow guide structure 3 between the first position and the second position, the flow guide structure 3 always covers the leading edge 14 of the fan blade inside the flow guide structure 3.

[0079] The present invention, by wrapping the leading edge of the axial flow fan blade inside the guide structure in the second position, can prevent the guide structure from failing to concentrate the gas, ensuring that the gas can be effectively concentrated and moved to the second position towards the second air outlet, thereby effectively increasing the air volume at the second air outlet and preventing the air volume from decreasing after the air outlet switches.

[0080] In some implementations...

[0081] The distance between the first position and the second position along the axial direction of the axial flow fan blade is L, and the axial height of the axial flow fan blade is H, with L = 1 / 3H to 1 / 2H.

[0082] By limiting the maximum movement distance L of the guide ring as described above, the present invention is linked to the axial length of the axial flow fan blade. This effectively ensures that the leading edge of the axial flow fan blade is wrapped inside, preventing the guide structure from failing to concentrate the gas. This ensures that while guiding the gas to different air outlets, it can also form an effective gas concentration effect.

[0083] In some implementations...

[0084] It also includes a heat exchanger 7, an upper air guide plate 8, a lower air guide plate 9, a front panel 10, and a rear panel 11. The heat exchanger 7 is disposed inside the housing 1. The upper air guide plate 8 is disposed at the first air outlet 4 at the upper end. The lower air guide plate 9 is disposed at the second air outlet 5 at the lower end of the housing 1. The front panel 10 is located on the front end face of the housing 1, and the rear panel 11 is located on the rear end face of the housing 1.

[0085] This utility model, through the above-described structure, can form a reversible air-discharge air conditioner indoor unit, realizing the switching mode of top air intake and bottom air outlet, and bottom air intake and top air outlet, and the upper and lower air guide plates realize the guiding effect of the upper and lower air outlet airflow.

[0086] This invention relates to a duct control system in an axial flow duct system that allows for flexible adjustment of airflow direction to adapt to different user needs. By changing the rotation direction of the axial fan blades and adjusting the relative position of the axial fan blades and guide rings to match them, a duct system with high air volume, low noise, and high fan efficiency is achieved, along with an indoor air conditioning unit capable of reversible vertical airflow. This solves the problem that traditional air conditioners require complex and costly duct systems to achieve reversible vertical airflow. It also conforms to the principle of hot air naturally rising and cold air naturally sinking, better realizing whole-house air circulation while improving the operating efficiency of the air conditioning system and enhancing user comfort.

[0087] Driven by the motion mechanism, the guide ring of the present invention can move up and down a certain distance L relative to the axial flow fan blade along its axial direction.

[0088] The indoor unit of the air conditioner of the present invention includes two or more sets of fan duct systems, which achieve the effect of reversible airflow by rotating the axial fan blades in both directions (clockwise or counterclockwise).

[0089] like Figure 2 The diagram shown is an internal view of the indoor unit of the air conditioner of the present invention, which has air intake at the bottom and air outlet at the top.

[0090] As can be seen from the figure, the indoor unit of the air conditioner of the present invention is mainly composed of a front panel, a rear panel, an upper air vent and an upper air guide plate, a lower air vent and a lower air guide plate, an evaporator and an evaporator side plate, a water tray, a motor, an axial fan blade, a guide ring, and a guide ring movement mechanism.

[0091] The evaporator can be V-shaped with a corresponding water collection tray at the bottom; or it can be W-shaped with two corresponding water collection trays at the bottom. When the upper and lower air guide plates are opened, they form an upper air vent and a lower air vent.

[0092] like Figure 2 The diagram shows the internal structure of the indoor unit of the air conditioner according to the present invention, with air entering from the bottom and exiting from the top. As the axial fan blades rotate counter-clockwise, air enters from the bottom and exits from the top.

[0093] To increase airflow, reduce noise, and improve fan efficiency, the guide ring, driven by the drive mechanism, moves to the upper position of the housing, as shown in the first position in the diagram. At this point, the leading edge of the axial fan blade is positioned relative to the middle of the guide ring. Figure 2 As shown.

[0094] like Figure 3 The diagram shows the internal structure of the indoor unit of the air conditioner of the present invention, which has air inlet at the top and air outlet at the bottom.

[0095] With the clockwise rotation of the axial fan blades, air enters from the top and exits from the bottom. To increase airflow, reduce noise, and improve fan efficiency, the guide ring is moved to the lower part of the housing, the second position in the figure, driven by the drive mechanism. At this point, the leading edge of the axial fan blades is positioned above the guide ring.

[0096] Alternatively, the guide ring can remain stationary while the motor and axial fan blades move up and down as a whole. By changing the relative position of the axial fan blades and the guide ring, and combining this with the forward and reverse rotation of the axial fan blades, reversible airflow can be achieved.

[0097] In addition to the two axial flow fan blade and duct systems mentioned above, there can also be two or more axial flow fan blade and duct systems.

[0098] Additionally, taking a two-set axial fan system as an example, it can achieve different air outlet modes, with a total of four combinations: left upper air outlet + right upper air outlet, left lower air outlet + right lower air outlet, left upper air outlet + right lower air outlet, and left lower air outlet + right upper air outlet. Each of these modes can achieve zoned air supply and automatic full-area air sweeping, ensuring airflow is directed towards and away from people. Through AI intelligent radar (or infrared) sensing, a dual-circulation airflow system is formed, achieving intelligent and comfortable air delivery.

[0099] In addition, the left and right fan duct systems can be independent systems and can operate independently. There are three operating modes: left side running + right side not running, left side not running + right side running, and left side running + right side running.

[0100] In addition, the left and right fans can operate at different speeds according to the different needs of the left and right zones.

[0101] Furthermore, to better coordinate with the two sets of fan duct systems on the left and right sides, and to achieve better control of the air inlet and outlet, the air guide vanes corresponding to the air inlet and outlet can be divided into two, and each can be controlled independently. Depending on the different functional operating modes, the opening angle of the air guide vanes can be different. For example... Figure 7 The diagram shown is a schematic diagram of the partitioned structure of the upper and lower air guide plates of the present invention.

[0102] This utility model also provides an air conditioner, which includes the aforementioned reversible air outlet indoor unit.

[0103] This utility model relates to an invention of an axial flow duct system that can flexibly adjust the airflow direction to adapt to different user needs. By changing the rotation direction of the axial flow fan blades and then adjusting the relative position of the axial flow fan blades and the guide ring to match them, a duct system with large air volume, low noise and high fan efficiency is achieved, as well as an air conditioning indoor unit that can realize reversible airflow up and down.

[0104] This invention solves the problem that traditional air conditioners require complex and costly duct systems to achieve reversible vertical airflow. This invention follows the principle that hot air naturally rises and cold air naturally sinks, achieving better whole-house air circulation while improving the operating efficiency of the air conditioning system and enhancing user comfort.

[0105] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An air conditioning indoor unit with reversible airflow, characterized in that: include: The housing (1), the fan blade (2), and the air guide structure (3) are provided. The housing (1) has a first air outlet (4) and a second air outlet (5). The first air outlet (4) and the second air outlet (5) are provided on different surfaces of the housing (1). The fan blade (2) can drive airflow through the first air inlet (4) into the housing (1) and out through the second air inlet (5). At this time, the guide structure (3) can move toward the second air inlet (5) to a second position to guide the airflow blown by the fan blade (2) to the second air inlet (5) and increase the airflow of the second air inlet (5). The fan blade (2) can also drive airflow through the second air inlet (5) into the housing (1) and out through the first air inlet (4). At this time, the guide structure (3) can move toward the first air inlet (4) to a first position to guide the airflow blown by the fan blade (2) to the first air inlet (4) and increase the airflow of the first air inlet (4). The first position is closer to the first air inlet (4) than the second position, and the second position is closer to the second air inlet (5) than the first position.

2. The reversible air outlet indoor unit of the air conditioner according to claim 1, characterized in that: The flow guiding structure (3) includes a first flow guiding structure (31) and a second flow guiding structure (32). The first flow guiding structure (31) is positioned closer to the first air outlet (4) relative to the second flow guiding structure (32). The second flow guiding structure (32) is positioned closer to the second air outlet (5) relative to the first flow guiding structure (31). The first flow guiding structure (31) and the second flow guiding structure (32) are connected as one unit. The first flow guiding structure (31) can guide the gas towards the first air outlet (4). The first flow guiding structure (31) is a ring structure, and the flow area inside the ring gradually increases from the end away from the first air outlet (4) to the end facing the first air outlet (4). The second flow guiding structure (32) can guide the gas towards the second air outlet (5). The second flow guiding structure (32) is also a ring structure, and the flow area inside the ring gradually increases from the end away from the second air outlet (5) to the end facing the second air outlet (5).

3. The reversible air outlet indoor unit of the air conditioner according to claim 2, characterized in that: A third flow guide structure (33) is connected between the first flow guide structure (31) and the second flow guide structure (32). The third flow guide structure (33) is a cylindrical structure. One axial end of the first flow guide structure (31) is connected to one axial end of the third flow guide structure (33), and the other axial end of the first flow guide structure (31) extends away from the third flow guide structure (33). The first flow guide structure (31) is a flared structure from one axial end to the other axial end, and the cross-sectional area inside its annular structure gradually increases. One axial end of the second flow guide structure (32) is connected to the other axial end of the third flow guide structure (33), and the other axial end of the second flow guide structure (32) extends away from the third flow guide structure (33). The second flow guide structure (32) is a flared structure from one axial end to the other axial end, and the cross-sectional area inside its annular structure gradually increases.

4. The reversible air outlet indoor unit of the air conditioner according to claim 2, characterized in that: The fan blade (2) and the air guide structure (3) are both located inside the housing (1). The first air outlet (4) is located on the upper end face of the housing (1), and the second air outlet (5) is located on the lower end face of the housing (1). The upper end face and the lower end face are two opposite faces. The first air guide structure (31) is an upper air guide ring, and the second air guide structure (32) is a lower air guide ring. The upper air guide ring is located above the lower air guide ring.

5. The reversible air outlet indoor unit of the air conditioner according to claim 4, characterized in that: The fan blade (2) is an axial flow fan blade with its axis in the vertical direction. The lower end of the fan blade (2) is connected to a motor (6) to drive the axial flow fan blade to rotate. At the first position, the flow guide structure (3) covers the upper part of the axial flow fan blade inside the flow guide structure; The upper end of the first flow guide structure (31) is higher than the upper end of the axial flow fan by a first preset distance, and the lower end of the second flow guide structure (32) is higher than the lower end of the axial flow fan by a second preset distance. The upper end of the axial flow fan is located between the upper end of the first flow guide structure (31) and the lower end of the second flow guide structure (32). Both the first preset distance and the second preset distance are greater than 0.

6. The reversible air outlet indoor unit of the air conditioner according to claim 5, characterized in that: The axial flow fan blade includes a leading edge (14), which is the edge of the motor shaft closest to the motor (6) in the axial flow fan blade. At the first position, the flow guide structure (3) covers the leading edge (14) of the fan blade inside the flow guide structure (3).

7. The reversible air outlet indoor unit of the air conditioner according to claim 6, characterized in that: At the second position, the flow guide structure (3) covers the leading edge (14) of the fan blade inside the flow guide structure (3); The upper end of the first flow guide structure (31) is lower than the upper end of the axial flow fan blade by a third preset distance, and the lower end of the second flow guide structure (32) is higher than the lower end of the axial flow fan blade by a fourth preset distance. Both the third preset distance and the fourth preset distance are greater than 0. Furthermore, during the movement of the flow guide structure (3) between the first position and the second position, the flow guide structure (3) always covers the leading edge (14) of the fan blade inside the flow guide structure (3).

8. The reversible air outlet indoor unit of the air conditioner according to claim 5, characterized in that: The distance between the first position and the second position along the axial direction of the axial flow fan blade is L, and the axial height of the axial flow fan blade is H, with L = 1 / 3H to 1 / 2H.

9. The reversible air outlet indoor unit of the air conditioner according to claim 4, characterized in that: It also includes a heat exchanger (7), an upper air guide plate (8), a lower air guide plate (9), a front panel (10), and a rear panel (11). The heat exchanger (7) is disposed inside the housing (1). The upper air guide plate (8) is disposed at the first air outlet (4) at the upper end. The lower air guide plate (9) is disposed at the second air outlet (5) at the lower end of the housing (1). The front panel (10) is located on the front end face of the housing (1), and the rear panel (11) is located on the rear end face of the housing (1).

10. An air conditioner, characterized in that: The air conditioning indoor unit includes any one of claims 1-9 with reversible air outlet.

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