Air conditioner indoor unit and air conditioner unit

Abstract

The utility model relates to an air conditioner indoor unit and an air conditioning unit, the air conditioner indoor unit comprises a shell (1), the shell (1) is provided with a first air outlet (10) and a second air outlet (20), the shell (1) comprises a top plate (11) and a bottom plate (12), the first air outlet (10) is formed in the top plate (11) and used for air outlet in a refrigeration mode, and the second air outlet (20) is formed in the bottom plate (12) and used for air outlet in a heating mode; the fan (2 ') comprises a volute assembly (2), the volute assembly (2) comprises a fixed volute (21) and a movable volute (22), the movable volute (22) is rotatably arranged in the fixed volute (21) around the central axis of the fan (2'), so that the air conditioner indoor unit is switched between an upper air outlet state of a refrigeration mode and a lower air outlet state of a heating mode, and the central axis extends in the first direction (x).

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning unit technology, and in particular to an indoor air conditioning unit and an air conditioning system. Background Technology

[0002] Currently, wall-mounted air conditioners achieve the change of hot and cold air direction by setting an air deflector at the only outlet of the fan. However, forcibly changing the air direction by using an air deflector results in large airflow impact losses, poor airflow change effect, and poor cooling and heating performance. Utility Model Content

[0003] The embodiments of this disclosure provide an indoor air conditioning unit and an air conditioning system that can optimize cooling and heating performance.

[0004] According to one aspect of this disclosure, an indoor air conditioning unit is provided, comprising: a housing having a first air outlet and a second air outlet; the housing including a top plate and a bottom plate; the first air outlet being disposed on the top plate and used for air outlet in cooling mode; and the second air outlet being disposed on the bottom plate and used for air outlet in heating mode; and

[0005] The fan includes a volute assembly, which includes a fixed volute and a movable volute. The movable volute is rotatably disposed within the fixed volute about the central axis of the fan, so that the indoor unit of the air conditioner can switch between an upper air outlet state in cooling mode and a lower air outlet state in heating mode. The central axis extends along a first direction.

[0006] In some embodiments, the housing has a first return air inlet and a second return air inlet. The first return air inlet is at least located in the bottom region of the housing and is used for return air in cooling mode. The second return air inlet is at least located in the top region of the housing and is used for return air in heating mode. Both the first and second return air inlets are connected to the air inlet of the volute assembly.

[0007] In some embodiments, the housing further includes a front panel connected between the top panel and the bottom panel;

[0008] The indoor unit of the air conditioner also includes a heat exchanger extending along a first direction. The heat exchanger is located between the fan and the front panel along a second direction, which is perpendicular to the first direction. A return air duct is formed between the heat exchanger and the front panel, and the return air duct is connected to the first return air inlet and the second return air inlet.

[0009] In some embodiments, the first return air inlet and the first air outlet are located on both sides of the heat exchanger along the second direction, and the second return air inlet and the second air outlet are located on both sides of the heat exchanger along the second direction. The second return air inlet is disposed closer to the front panel than the first air outlet, and the first return air inlet is disposed closer to the front panel than the second air outlet.

[0010] In some embodiments, the heat exchanger includes a first heat exchange plate and a second heat exchange plate, which are connected at an obtuse angle, with the opening of the angle facing the fan.

[0011] In some embodiments,

[0012] The second return air vent is located on the ceiling; and / or

[0013] The housing also includes a front panel, which is connected between the top panel and the bottom panel, and the front panel and the bottom panel are connected by a transition plate, with the first return air vent located on the transition plate.

[0014] In some embodiments, a first guide vane is rotatably provided at the first return air inlet, and a second guide vane is rotatably provided at the second return air inlet;

[0015] When the indoor unit of the air conditioner is in the downward air outlet state, the second guide plate is tilted upward and opened relative to the second return air vent, and the first guide plate covers the first return air vent; when the indoor unit of the air conditioner is in the upward air outlet state, the first guide plate opens outward relative to the first return air vent, and the second guide plate covers the second return air vent.

[0016] In some embodiments, the housing further includes a front panel connected between the top panel and the bottom panel;

[0017] When the indoor unit of the air conditioner is in the upward or downward air outlet state, the front panel moves outward to form an air intake area around it, which serves as the first or second return air inlet.

[0018] In some embodiments, a third guide vane is rotatably provided at the first air outlet, and a fourth guide vane is rotatably provided at the second air outlet;

[0019] When the indoor unit of the air conditioner is in the upward air outlet state, the third guide plate is tilted upward relative to the first air outlet and opens, and the fourth guide plate covers the second air outlet; when the indoor unit of the air conditioner is in the downward air outlet state, the fourth guide plate is tilted downward relative to the second air outlet and opens, and the third guide plate covers the first air outlet.

[0020] In some embodiments, the housing further includes a front plate connected between a top plate and a bottom plate, and a third guide plate rotatably connected to one end of the first air outlet away from the front plate along a second direction, the second direction being perpendicular to the first direction.

[0021] In some embodiments,

[0022] The acute angle between the air outlet's direction and the horizontal plane is 60° to 70°; and / or

[0023] The acute angle between the air outlet direction and the horizontal plane is no greater than 30°.

[0024] In some embodiments, the volute assembly has an air inlet, and the fixed volute includes an upper air outlet and a lower air outlet, the upper air outlet being connected to a first air outlet and the lower air outlet being connected to a second air outlet.

[0025] In the upper air outlet state, the air inlet and the upper air outlet are connected to form a first air outlet duct for air outlet in cooling mode; in the lower air outlet state, the air inlet and the lower air outlet are connected to form a second air outlet duct for air outlet in heating mode.

[0026] In some embodiments, the housing further includes a front panel connected between the top panel and the bottom panel, with the upper air outlet located on the side of the lower air outlet near the front panel along a second direction, the second direction being perpendicular to the first direction.

[0027] In some embodiments, the acute angle between the air outlet direction and the horizontal plane is 60° to 70°.

[0028] In some embodiments, the housing further includes a front panel connected between the top panel and the bottom panel. In a projection plane perpendicular to the first direction, with the projection point of the central axis as the vertex of the included angle, the first line connecting the center of the upper air outlet and the vertex of the included angle and the second line connecting the center of the lower air outlet and the vertex of the included angle form a preset angle on the side facing the front panel. The preset angle ranges from 130° to 180°.

[0029] In some embodiments, the preset included angle ranges from 150° to 170°.

[0030] In some embodiments, one end of the moving volute is provided with a stop portion, which is configured to abut against and be limited by the inner wall of the fixed volute when the moving volute is rotated into position.

[0031] In some embodiments, multiple fans are spaced apart along a first direction, and each fan further includes centrifugal fan blades. The indoor unit of the air conditioner also includes a drive component and a connector. The output end of the drive component is connected to the connector, and the connector is connected between the centrifugal fan blades of two adjacent fans.

[0032] According to another aspect of this disclosure, an air conditioning unit is proposed, including the indoor unit of the above-described embodiments.

[0033] Based on the above technical solutions, in the air conditioner indoor unit of this embodiment, the movable volute is rotatably disposed within the fixed volute, enabling the air conditioner indoor unit to switch between the upper air outlet state in cooling mode and the lower air outlet state in heating mode, thereby achieving upward blowing of cold air and downward blowing of hot air, thus optimizing the cooling and heating effect and improving user comfort; by setting a first air outlet for cooling mode on the top plate and a second air outlet for heating mode on the bottom plate, the height difference of the indoor unit casing can be fully utilized to increase the uniformity of the distribution of cold and hot air during indoor movement; by setting air outlets on the top and bottom plates respectively to achieve upper and lower air outlets, it is not necessary to forcibly guide the airflow to change the airflow direction at the fan outlet, which can reduce airflow impact loss. Attached Figure Description

[0034] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0035] Figure 1 This is a schematic diagram showing some embodiments of the indoor unit of the air conditioner in the upward air outlet state.

[0036] Figure 2 This is a schematic diagram showing some embodiments of the indoor unit of the air conditioner in a downward air outlet state.

[0037] Figure 3 This is a schematic diagram of the structure of some embodiments of the fan and heat exchanger in the indoor unit of an air conditioner disclosed herein.

[0038] Figure 4 This is a schematic diagram of the structure of some embodiments of the fan in the indoor unit of an air conditioner disclosed herein.

[0039] Figure 5 This is a cross-sectional view of the indoor unit of the air conditioner in the upward air outlet position.

[0040] Figure 6 This is a schematic diagram of the volute assembly when the indoor unit of the air conditioner is in the upward air outlet state.

[0041] Figure 7 This is a cross-sectional view of the indoor unit of the air conditioner in the downward air outlet position.

[0042] Figure 8 This is a schematic diagram of the volute assembly when the indoor unit of the air conditioner is in the downward air outlet state.

[0043] Figure 9 and Figure 10 They are respectively Figure 8 Enlarged views of points A and B.

[0044] Figure 11 This is a schematic diagram of some embodiments in which the moving volute is rotated by a drive mechanism.

[0045] Explanation of reference numerals in the attached figures

[0046] 1. Shell; 11. Top plate; 12. Bottom plate; 13. Side plate; 14. Front plate; 15. Rear plate; 16. Transition plate; 10. First air outlet; 20. Second air outlet; 30. First return air outlet; 40. Second return air outlet; 121. First guide plate; 111. Second guide plate; 112. Third guide plate; 122. Fourth guide plate;

[0047] 2' Fan assembly; 2. Volute assembly; 21. Fixed volute; 211. Upper air outlet; 212. Lower air outlet; 213. Bending section; 22. Moving volute; 220. Air inlet; 221. Stop section; 222. Mounting section; 223. Arc-shaped section; 23. Centrifugal fan blade; 24. Seal;

[0048] 3. Heat exchanger; 31. First heat exchange plate; 32. Second heat exchange plate;

[0049] 4. Connectors;

[0050] 5. Drive assembly; 51. Power component; 52. First gear; 53. Second gear; 54. Third gear; 55. Arc rack; 56. Connecting shaft;

[0051] x, first direction; y, second direction; z, third direction. Detailed Implementation

[0052] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0053] The terms "first," "second," and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "above," "below," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0054] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0055] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0056] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0057] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0058] First, this disclosure proposes an indoor unit for an air conditioner, such as Figures 1 to 11 As shown, in some embodiments, the indoor unit of the air conditioner includes:

[0059] The housing 1 has a first air outlet 10 and a second air outlet 20. The housing 1 includes a top plate 11 and a bottom plate 12. The first air outlet 10 is disposed on the top plate 11 and is used for air outlet in cooling mode. The second air outlet 20 is disposed on the bottom plate 12 and is used for air outlet in heating mode.

[0060] The fan 2' includes a volute assembly 2, which includes a fixed volute 21 and a movable volute 22. The movable volute 22 is rotatably disposed within the fixed volute 21 around the central axis of the fan 2', so that the indoor unit of the air conditioner can switch between an upper air outlet state in cooling mode and a lower air outlet state in heating mode. The central axis extends along a first direction x.

[0061] Specifically, the housing 1 further includes a front plate 14 and a rear plate 15, which are connected between the top plate 11 and the bottom plate 12 and are spaced apart relative to each other along a second direction y, which is perpendicular to the first direction x. The top plate 11 and the bottom plate 12 are spaced apart relative to each other along a third direction z, which is perpendicular to the first direction x and the second direction y. The third direction z can be the height direction. The housing 1 also includes two side plates 13, which are connected between the top plate 11 and the bottom plate 12 and are spaced apart along the first direction x. The top plate 11, the bottom plate 12, the front plate 14, the rear plate 15, and the two side plates 13 form an accommodating space for accommodating the fan 2'.

[0062] Specifically, compared to a fan with only one air outlet and a guide vane used to change the direction of hot and cold air, the movable volute design avoids forced airflow changes, reduces airflow impact losses, and optimizes cooling and heating performance.

[0063] Specifically, the moving volute 22 has an arc-shaped main body with a notch in the circumferential direction, which is used to form a ventilation opening.

[0064] Specifically, the moving volute 22 can be disposed within the cylindrical cavity of the fixed volute 21 and can rotate around the central axis of the cylindrical cavity. This allows the vent of the moving volute 22 to rotate to a position communicating with the first air outlet 10 to form an upward air outlet; or to rotate to a position communicating with the second air outlet 20 to form a downward air outlet. The shape of the moving volute 22 can be designed as a gradually opening diffuser to reduce energy loss during the operation of the fan blades.

[0065] For example, both cold and hot air can be blown out at an angle, and the airflow direction is away from the rear panel 15, so that the airflow can reach a larger area of ​​the room as much as possible.

[0066] Optionally, the top plate 11, bottom plate 12, front plate 14, rear plate 15, and two side plates 13 can be straight plates, curved plates, a combination of straight and curved plates, or other shapes. Optionally, the fan 2' can be provided with only one or multiple fans along the first direction x. Optionally, the shape of the first air outlet 10 and the second air outlet 20 can be rectangular, elliptical, circular, or any other shape.

[0067] Optionally, such as Figure 11 As shown, a drive assembly 5 for driving the rotation of the moving volute 22 can be provided between the moving volute 22 and the fixed volute 21. For example, the drive assembly 5 may include an arc-shaped rack 55 disposed on the outer wall of the moving volute 22 and a gear disposed on the inner side of the fixed volute 21, and the rotation of the moving volute 22 is realized through the meshing transmission between the gear and the arc-shaped rack 55.

[0068] Specifically, the drive assembly 5 includes a power component 51, a first gear 52, a second gear 53, a third gear 54, a connecting shaft 56, and two arc-shaped racks 55. The third gear 54 and the second gear 53 are coaxially connected and spaced apart by the connecting shaft 56. The power component 51 can be a motor or electric motor, etc. The first gear 52 is coaxially connected to the output end of the power component 51. Arc-shaped racks 55 are respectively provided on the outer walls of both ends of the moving volute 22 along the first direction x. The first gear 52 meshes with one of the arc-shaped racks 55 through the second gear 53, and the third gear 54 meshes with the other arc-shaped rack 55.

[0069] In this embodiment, the indoor unit of the air conditioner is rotatably mounted inside the fixed volute 21 via the movable volute 22, enabling the indoor unit to switch between the upward air outlet state in cooling mode and the downward air outlet state in heating mode. This allows for upward blowing of cold air and downward blowing of hot air, thereby optimizing the cooling and heating effect and improving user comfort. By setting a first air outlet 10 for cooling mode on the top plate 11 and a second air outlet 20 for heating mode on the bottom plate 12, the height difference of the indoor unit casing can be fully utilized to increase the uniformity of the distribution of cold and hot air during indoor movement. By setting air outlets on the top plate 11 and the bottom plate 12 respectively to achieve upward and downward air outlets, it is not necessary to forcibly guide the airflow at the fan outlet to change the airflow direction, which can reduce airflow impact loss.

[0070] Specifically, by setting a first air outlet 10 on the top plate 11 for cooling mode, the cold air blows upward, avoiding direct airflow onto people. At the same time, by making full use of the height of the indoor unit, the air outlet height of the cold air is raised, allowing the cold air to be more evenly distributed in the room as it descends, circulating fully and creating a shower-like cooling effect, thereby improving the cooling effect and user comfort. By setting a second air outlet 20 on the bottom plate 12 for heating mode, the hot air blows downward, allowing the hot air to be directly delivered to the ground. This allows the hot air to be more evenly distributed in the room as it rises, circulating fully and creating a carpet-like heating effect, thereby improving the heating effect and user comfort.

[0071] In some embodiments, the housing 1 has a first return air inlet 30 and a second return air inlet 40. The first return air inlet 30 is at least located in the bottom region of the housing 1 and is used for return air in cooling mode. The second return air inlet 40 is at least located in the top region of the housing 1 and is used for return air in heating mode. Both the first return air inlet 30 and the second return air inlet 40 are connected to the air inlet 220 of the volute assembly 2.

[0072] Specifically, the air inlets 220 are located on both sides of the volute assembly 2 along the first direction x. The first return air inlet 30 can be located on the bottom plate 12 or in the bottom area of ​​the front plate 14, both of which are located in the bottom area of ​​the housing 1; the second return air inlet 40 can be located on the top plate 11 or in the top area of ​​the front plate 14, both of which are located in the top area of ​​the housing 1. Furthermore, the first return air inlet 30 and the second return air inlet 40 can also be located in other areas of the housing 1.

[0073] In the cooling mode of the indoor unit of the air conditioner, indoor air enters through the first return air vent 30, and the airflow after cooling and heat exchange is discharged through the first air outlet 10; in the heating mode of the indoor unit of the air conditioner, indoor air enters through the second return air vent 40, and the airflow after heating and heat exchange is discharged through the second air outlet 20.

[0074] This embodiment, by placing the first return air vent 30 at least in the bottom region of the housing 1, increases the distance between the first return air vent 30 and the first air outlet 10 when the indoor unit is in cooling mode with upward airflow. This prevents the airflow discharged from the first air outlet 10 from being re-entrained by the first return air vent 30 and extends the airflow path for sufficient heat exchange. Similarly, by placing the second return air vent 40 at least in the top region of the housing 1, the distance between the second return air vent 40 and the second air outlet 20 increases when the indoor unit is in heating mode with downward airflow. This prevents the airflow discharged from the second air outlet 20 from being re-entrained by the second return air vent 40 and extends the airflow path for sufficient heat exchange. Furthermore, by providing two return air vents, the filter at the return air vent does not need to be moved in either cooling or heating mode, resulting in a simple internal structure and high reliability.

[0075] In some embodiments, such as Figure 3 As shown, the housing 1 also includes a front plate 14, which is connected between the top plate 11 and the bottom plate 12; the indoor unit of the air conditioner also includes a heat exchanger 3 extending along the first direction x, which is disposed between the fan 2' and the front plate 14 along the second direction y, which is perpendicular to the first direction x. A return air duct is formed between the heat exchanger 3 and the front plate 14, and the return air duct is connected to the first return air inlet 30 and the second return air inlet 40.

[0076] This embodiment forms a return air duct between the heat exchanger 3 and the front panel 14, allowing the return airflow entering from the first return air inlet 30 or the second return air inlet 40 to enter the return air duct, fully exchange heat with the heat exchanger 3, and then enter the air inlet 220. This improves heat exchange efficiency and effect, optimizing the cooling and heating performance. Furthermore, placing the return air duct between the heat exchanger 3 and the front panel 14 facilitates the simultaneous placement of return air inlets in both the top and bottom areas of the housing 1, thus meeting the requirements for switching between top and bottom air outlets.

[0077] In some embodiments, such as Figure 5 and Figure 7 As shown, the first return air inlet 30 and the first air outlet 10 are located on both sides of the heat exchanger 3 along the second direction y, and the second return air inlet 40 and the second air outlet 20 are located on both sides of the heat exchanger 3 along the second direction y. The second return air inlet 40 is set closer to the front plate 14 relative to the first air outlet 10, and the first return air inlet 30 is set closer to the front plate 14 relative to the second air outlet 20.

[0078] Among them, such as Figure 5 As shown, the first return air vent 30 is located in the bottom area of ​​the casing 1, and the first air outlet 10 is located on the top plate 11. In cooling mode, the airflow enters the return air channel between the front plate 14 and the heat exchanger 3 through the first return air vent 30, then flows through the heat exchanger 3 for heat exchange, and then enters the fan 2' before being discharged from the first air outlet 10. Figure 7As shown, the second return air inlet 40 is located in the top area of ​​the housing 1, and the second air outlet 20 is located on the bottom plate 12. In the heating mode, the airflow enters the return air channel between the front plate 14 and the heat exchanger 3 through the second return air inlet 40, then flows through the heat exchanger 3 for heat exchange, and then enters the fan 2' and is discharged from the second air outlet 20.

[0079] In this embodiment, the return air inlet and the air outlet are located on both sides of the heat exchanger 3, which allows the return airflow to fully exchange heat with the heat exchanger 3 during its flow, thereby improving the heat exchange effect. Moreover, in cooling or heating mode, the return air inlet and the air outlet are located diagonally opposite to the heat exchanger 3 and are far apart, which can prevent the airflow from being drawn back into the housing 1 due to the return air inlet and the air outlet being too close, making the airflow smoother and improving the heat exchange efficiency.

[0080] In some embodiments, such as Figure 5 As shown, the heat exchanger 3 includes a first heat exchange plate 31 and a second heat exchange plate 32. The first heat exchange plate 31 and the second heat exchange plate 32 are connected at an obtuse angle, and the opening of the angle faces the fan 2'.

[0081] For example, the first heat exchange plate 31 is arranged parallel to the front plate 14, the upper end of the second heat exchange plate 32 is connected to the lower end of the first heat exchange plate 31, and the lower end of the second heat exchange plate 32 extends toward the direction close to the fan 2'.

[0082] In this embodiment, the heat exchanger 3 surrounds the fan 2' on the side near the front plate 14, making the distance between the heat exchanger 3 and the fan 2' from top to bottom relatively close. This makes it easier for the airflow passing through the heat exchanger 3 from the return air duct to enter the air inlet 220 of the fan 2', thereby improving the air intake stability of the fan 2'. In addition, the inclined second heat exchange plate 32 is conducive to setting the bottom edge of the front of the housing 1 as an arc transition structure.

[0083] In some embodiments, the second return air vent 40 is disposed on the top plate 11; and / or the housing 1 further includes a front plate 14, which is connected between the top plate 11 and the bottom plate 12, and the front plate 14 and the bottom plate 12 are connected by a transition plate 16, and the first return air vent 30 is disposed on the transition plate 16.

[0084] The first air outlet 10 and the second return air outlet 40 are both located on the top plate 11, the second air outlet 20 is located on the bottom plate 12, and the first return air outlet 30 is located on the transition plate 16. For example, the transition plate 16 can have an arc-shaped structure, such as a circular arc structure. A partition is provided between the top of the first heat exchange plate 31 and the top plate 11 to separate the first air outlet 10 and the second return air outlet 40; similarly, a partition is also provided between the bottom of the second heat exchange plate 32 and the bottom plate 12 to separate the second air outlet 20 from the first return air outlet 30.

[0085] In this embodiment, the second return air vent 40 is located on the top plate 11 and can be diagonally arranged with the second air outlet 20 relative to the heat exchanger 3. This allows the distance between the second return air vent 40 and the second air outlet 20 to be greater, which can prevent the air in the heating mode from being re-drawn into the housing 1, making the air outlet smoother and improving the heat exchange efficiency. Moreover, the hot air in the room tends to flow upwards, and placing the second return air vent 40 on the top plate 11 is more conducive to realizing the return air in the heating mode.

[0086] Furthermore, the transition plate 16 connecting the front plate 14 and the bottom plate 12 creates a smooth connection at the bottom outer edge of the casing 1, preventing injury and enhancing aesthetics. With the transition plate 16 installed, the width of the bottom plate 12 along the second direction y decreases. Placing the first return air inlet 30 on the transition plate 16 reduces the difficulty of arranging the lower air vents and allows for a larger size of the first return air inlet 30, enabling a greater air intake. Moreover, since cold air tends to flow downwards, placing the first return air inlet 30 on the transition plate 16 facilitates smooth airflow during cooling mode. Additionally, the first return air inlet 30 and the second air outlet 20 are diagonally positioned relative to the heat exchanger 3, increasing the distance between them and preventing the airflow during cooling mode from being re-drawn into the casing 1, resulting in smoother airflow and improved heat exchange efficiency.

[0087] In some embodiments, a first guide vane 121 is rotatably provided at the first return air inlet 30, and a second guide vane 111 is rotatably provided at the second return air inlet 40.

[0088] When the indoor unit of the air conditioner is in the downward air outlet state, the second guide plate 111 is tilted upward relative to the second return air vent 40 and opens, and the first guide plate 121 covers the first return air vent 30; when the indoor unit of the air conditioner is in the upward air outlet state, the first guide plate 121 is opened outward relative to the first return air vent 30, and the second guide plate 111 covers the second return air vent 40.

[0089] Among them, such as Figure 1 and Figure 5 As shown, the first return air inlet 30 is disposed on the transition plate 16. The transition plate 16 can be formed by a grille. The transition plate 16 is arc-shaped. The first guide plate 121 extends along the first direction x, is also arc-shaped, and is fitted to the outside of the transition plate 16. The upper end of the first guide plate 121 is rotatably connected to the upper end of the first return air inlet 30, and the lower end of the first guide plate 121 is openable and closable.

[0090] like Figure 2 and Figure 7 As shown, the second return air vent 40 is located on the top plate 11, and the second guide plate 111 is a long strip-shaped structure extending along the first direction x.

[0091] Alternatively, the first deflector 121 or the second deflector 111 can also be replaced by the overall movement of the panel. For example, one end of the top plate 11 can be tilted outward to form a second return air vent 40, and one end of the bottom plate 12 can be tilted outward to form a first return air vent 30.

[0092] This embodiment allows for the selective opening and closing of matching return air vents in different operating modes of the indoor air conditioning unit through the rotation of the first guide plate 121 and the second guide plate 111. This control is simple and convenient. Even if one return air vent malfunctions, it does not affect the function of the other operating mode. Furthermore, the guide plates can guide the return airflow, optimizing the return air effect. In addition, in the top air outlet state or the off state, the second return air vent 40 is closed to prevent return air leakage and to prevent dust and debris from falling into the second return air vent 40 when not in air outlet operation.

[0093] In some embodiments, the housing 1 further includes a front panel 14, which is connected between the top panel 11 and the bottom panel 12. When the indoor unit of the air conditioner is in the upward air outlet state or the downward air outlet state, the front panel 14 is moved outward as a whole to form an air inlet area around the perimeter, and the air inlet area serves as the first return air inlet 30 or the second return air inlet 40.

[0094] This embodiment eliminates the need for a deflector at the return air vent. By pushing the front panel 14 of the housing 1 outwards, a gap is formed around the front panel 14, allowing for the reuse of the first return air vent 30 and the second return air vent 40. This further reduces control complexity and facilitates increasing the return air vent area to improve air intake. Furthermore, since the front panel 14 retracts when the indoor unit is not operating, the thickness of the indoor unit in the second direction (y) can be reduced, better meeting the needs of wall-mounted indoor units.

[0095] In some embodiments, a third guide plate 112 is rotatably provided at the first air outlet 10, and a fourth guide plate 122 is rotatably provided at the second air outlet 20.

[0096] When the indoor unit of the air conditioner is in the upward air outlet state, the third guide plate 112 is tilted upward relative to the first air outlet 10 and opens, and the fourth guide plate 122 covers the second air outlet 20; when the indoor unit of the air conditioner is in the downward air outlet state, the fourth guide plate 122 is tilted downward relative to the second air outlet 20 and opens, and the third guide plate 112 covers the first air outlet 10.

[0097] like Figure 1 and Figure 5As shown, the first air outlet 10 is located on the top plate 11, and the third guide plate 112 is a long strip-shaped structure extending along the first direction x. When the indoor unit of the air conditioner is in the upward air outlet state, the third guide plate 112 opens to guide the air forward and upward, that is, to guide the air along the second direction y towards the front plate 14. Optionally, the hinge center line of the third guide plate 112 can be in the middle area of ​​the first air outlet 10 or in the edge area of ​​the first air outlet 10. Optionally, the angle between the third guide plate 112 and the top plate 11 in the open state can be no greater than 30°, so as to make the horizontal air delivery distance of the first air outlet 10 farther.

[0098] like Figure 2 and Figure 7 As shown, the second air outlet 20 is located on the base plate 12, and the fourth guide plate 122 is a long strip-shaped structure extending along the first direction x. When the indoor unit of the air conditioner is in the downward air outlet state, the fourth guide plate 122 opens to guide the air forward and downward, that is, to guide the air along the second direction y towards the front plate 14. Optionally, the hinge center line of the fourth guide plate 122 can be in the middle area of ​​the second air outlet 20, or it can be in the edge area of ​​the second air outlet 20.

[0099] This embodiment allows for the selective opening and closing of matching air outlets in different operating modes of the indoor air conditioning unit through the rotation switching of the third guide plate 112 and the fourth guide plate 122, making control simple and convenient. Even if the opening and closing of one air outlet malfunctions, it will not affect the function of the other operating mode. Moreover, the guide plates can guide the airflow and optimize the air delivery effect. In addition, in the down-ventilation state or the off state, the first air outlet 10 is closed to prevent airflow leakage and to prevent dust and debris from falling into the first air outlet 10 when not in operation.

[0100] In some embodiments, such as Figure 5 As shown, the housing 1 also includes a front plate 14, which is connected between the top plate 11 and the bottom plate 12. The third guide plate 112 is rotatably connected to the end of the first air outlet 10 away from the front plate 14 along the second direction y, which is perpendicular to the first direction x.

[0101] This embodiment, by placing the third guide plate 112 on the side of the first air outlet 10 away from the front panel 14, can better correct the direction of cold air when the air outlet direction of the fan 2' is restricted by the structure and deviates greatly from the horizontal plane, by cooperating with the tilt direction of the third guide plate 112, so that the air outlet direction of the cold air is closer to the horizontal, thus optimizing the cooling effect.

[0102] In some embodiments, the acute angle between the air outlet direction of the second air outlet 20 and the horizontal plane is 60° to 70°; and / or the acute angle between the air outlet direction of the first air outlet 10 and the horizontal plane is not greater than 30°.

[0103] This embodiment, by limiting the air outlet direction of the second air outlet 20, enables hot air to be delivered directly to the ground and diffuse outward horizontally, thus optimizing the heating effect; by limiting the air outlet direction of the first air outlet 10, it enables cold air to cover a larger indoor area after it is vented, thus optimizing the cooling effect.

[0104] In some embodiments, the volute assembly 2 has an air inlet 220, and the fixed volute 21 includes an upper air outlet 211 and a lower air outlet 212. The upper air outlet 211 is connected to the first air outlet 10, and the lower air outlet 212 is connected to the second air outlet 20.

[0105] In the upper air outlet state, the air inlet 220 is connected to the upper air outlet 211 to form a first air outlet duct for air outlet in cooling mode; in the lower air outlet state, the air inlet 220 is connected to the lower air outlet 212 to form a second air outlet duct for air outlet in heating mode.

[0106] Specifically, the air inlet 220 can be located in the central area of ​​the volute assembly 2, and the air inlet 220 can be located at both ends of the volute assembly 2 along the central axis.

[0107] like Figure 5 As shown, a first connecting section is provided between the upper air outlet 211 of the fixed volute 21 and the first air outlet 10 of the top plate 11, and a second connecting section is provided between the lower air outlet 212 of the fixed volute 21 and the second air outlet 20 of the bottom plate 12. The size of the first air outlet 10 is larger than the size of the upper air outlet 211, and the size of the second air outlet 20 is larger than the size of the lower air outlet 212. That is, both the first connecting section and the second connecting section are gradually expanding pipe sections, which can increase the smoothness of air outlet of the indoor unit of the air conditioner.

[0108] Specifically, the side edges of the first and second connecting sections are straight, so that the direction of cold airflow from the first air outlet 10 is the same as the direction of cold airflow from the upper air outlet 211, and the direction of hot airflow from the second air outlet 20 is the same as the direction of hot airflow from the lower air outlet 212. Optionally, due to the orientation of the upper air outlet 211, an arc-shaped guide section can be provided on the side of the first connecting section near the front panel 14, which helps to direct the cold airflow from the first air outlet 10 in a direction that is as horizontal as possible.

[0109] In this embodiment, the air inlet 220 is connected to the upper air outlet 211 and the lower air outlet 212 of the fixed volute 21, so that the fan 2' forms a first air outlet duct for cooling mode and a second air outlet duct for heating mode. This enables the indoor unit of the air conditioner to switch between the upper air outlet state in cooling mode and the lower air outlet state in heating mode, realizing the upward blowing of cold air and the downward blowing of hot air, thereby optimizing the cooling and heating effect and improving user comfort.

[0110] In some embodiments, the housing 1 further includes a front plate 14, which is connected between the top plate 11 and the bottom plate 12. The upper air outlet 211 is located on the side of the lower air outlet 212 near the front plate 14 along the second direction y, and the second direction y is perpendicular to the first direction x.

[0111] In this embodiment, the upper air outlet 211 is located on the side of the lower air outlet 212 near the front panel 14. This allows for the full utilization of the space inside the housing 1 to arrange the fan 2', enabling the lower air outlet 212 to discharge air downwards and forwards, while the upper air outlet 211 tends to discharge air upwards and forwards, thereby optimizing the air discharge direction of the first air outlet 10 and the second air outlet 20.

[0112] In some embodiments, the acute angle between the air outlet direction of the lower air outlet 212 and the horizontal plane is 60° to 70°.

[0113] This embodiment limits the angle between the air outlet 212 and the horizontal plane, making the angle close to the empirical value for optimizing the heating effect. This allows the hot air to be discharged at a better angle, further optimizing the heating effect of the indoor unit of the air conditioner.

[0114] In some embodiments, such as Figure 6 As shown, the housing 1 also includes a front plate 14, which is connected between the top plate 11 and the bottom plate 12. In the projection plane perpendicular to the first direction x, with the projection point of the central axis as the vertex of the included angle, the first line connecting the center of the upper air outlet 211 and the vertex of the included angle and the second line connecting the center of the lower air outlet 212 and the vertex of the included angle form a preset included angle α on the side facing the front plate 14. The range of the preset included angle α is 130° to 180°.

[0115] Specifically, the midpoint of the two air outlets of the fixed volute 21 forms a preset angle α with the line connecting the center of the fan blade. Among the two lines forming the preset angle α, the slope of the second line is affected by the tilt angle of the lower air outlet 212 of the fixed volute. From an empirical perspective, the heating effect is better when the angle between the orientation of the lower air outlet 212 and the horizontal line is between 60° and 70°. Similarly, the slope of the first line is affected by the tilt angle of the upper air outlet 211 of the fixed volute. The cooling effect is better when the orientation of the upper air outlet 211 is close to horizontal. However, due to space limitations, the orientation of the upper air outlet 211 cannot be made horizontal. Therefore, the angle is adjusted as much as possible without interfering with the heat exchanger 3, so that the orientation of the upper air outlet 211 is shifted as close to the front plate 14 as possible, thereby optimizing the cooling effect.

[0116] This embodiment, by limiting the range of preset included angles, can optimize the orientation of the upper air outlet 211 and the lower air outlet 212 within a limited space, thereby improving the cooling and heating effects of the indoor unit of the air conditioner.

[0117] In some embodiments, the preset included angle α ranges from 150° to 170°.

[0118] This embodiment further optimizes the orientation of the upper air outlet 211 and the lower air outlet 212 by further limiting the range of the preset included angle, thereby optimizing the cooling and heating effect.

[0119] In some embodiments, such as Figure 9 and Figure 10 As shown, the end of the moving volute 22 is provided with a stop 221, which is configured to abut against and be limited by the inner wall of the fixed volute 21 when the moving volute 22 is rotated into position.

[0120] Optionally, the stop portion 221 can be a stop plate at an angle to the end of the moving volute 22. The stop portion 221 can be covered by a sealing member 24. For example, the sealing member 24 can cover the stop portion 221 from the end away from the moving volute 22, forming a U-shaped structure. For example, the sealing member 24 can be thermal insulation cotton. When the moving volute 22 rotates to a preset position, the sealing member 24 is pressed, and the stop portion 221 is blocked by the fixed volute 21.

[0121] Figure 8 This is a diagram showing the indoor unit of an air conditioner in heating mode. Figure 9 for Figure 8 In the enlarged view at point A, the first end of the moving volute 22 is provided with a stop portion 221. The stop portion 221 is designed as a baffle plate, and the baffle plate forms an obtuse angle with the outer surface of the moving volute 22. The fixed volute 21 is provided with a bent portion 213 at the first limit position. The bent portion 213 is constructed such that the portions on both sides of the fixed volute 21 located on the bent portion 213 are radially offset. When the moving volute 22 rotates to this position, the baffle plate and the seal 24 are attached to the inner wall of the bent portion 213 and are blocked by the portion of the fixed volute 21 located on one side of the bent portion 213.

[0122] Figure 10 for Figure 8 In the enlarged view at point B, the second end of the moving volute 22 includes an arc-shaped segment 223, and the end of the arc-shaped segment 223 is provided with an angled mounting portion 222. The mounting portion 222 extends toward the inner side of the moving volute 22. A stop portion 221 is connected to the side wall of the mounting portion 222 away from the arc-shaped segment 223. The stop portion 221 is designed as a baffle plate, which extends parallel to the second end of the moving volute 22. When the moving volute 22 rotates to this position, the baffle plate and the seal 24 are attached to the inner wall of the fixed volute 21 and are blocked by the end of the fixed volute 21. By setting the arc-shaped segment 223, the connection between the moving volute 22 and the air outlet can be made smoother.

[0123] When the indoor unit of the air conditioner needs to be switched to cooling mode, the moving volute 22 is rotated counterclockwise until the second end of the moving volute 22 rotates to the bend of the upper air outlet 211.

[0124] This embodiment provides a stop 221 at the end of the moving volute 22, which limits the rotation of the moving volute 22 to the corresponding position when the indoor unit of the air conditioner switches to the cooling mode or the heating mode, so as to accurately reach the preset position, open one of the air outlets and close the other air outlet; moreover, the limit can keep the moving volute 22 in a fixed position after switching to the position, and keep the actual size of the air outlet of the fan 2' unchanged when the airflow flows at high speed in the volute assembly 2.

[0125] In some embodiments, multiple fans 2' are spaced apart along a first direction x. The fans 2' also include centrifugal fan blades 23. The indoor unit of the air conditioner also includes a drive component and a connector 4. The output end of the drive component is connected to the connector 4. The connector 4 is connected between the centrifugal fan blades 23 of two adjacent fans 2'.

[0126] Specifically, the drive component is configured to drive the centrifugal fan blades 23 to rotate, and the connector 4 is connected between the centrifugal fan blades 23 of two adjacent fans, enabling the drive component to transmit power from the drive component to the centrifugal fan blades 23 on both sides, so that the drive component can drive the centrifugal fan blades 23 of multiple fans to rotate synchronously. Optionally, the drive component can be a motor, etc.

[0127] In this embodiment, the drive component is connected to the centrifugal fan blades 23 of adjacent fans 2' via connector 4, which can drive the centrifugal fan blades 23 of multiple fans 2' to rotate synchronously. While saving energy and improving energy efficiency, it optimizes the airflow distribution inside the fans 2' and the housing 1. Specifically, after the return airflow passes through the heat exchanger 3, it can enter different fans 2' more evenly and can be discharged along the entire length of the first air outlet 10 or the second air outlet 20.

[0128] Secondly, this disclosure also provides an air conditioning unit, including the indoor unit of the above embodiments.

[0129] The air conditioning unit in this embodiment switches between the upper air outlet state in cooling mode and the lower air outlet state in heating mode through the indoor unit, which can optimize the cooling and heating effect, improve user comfort, and improve energy efficiency.

[0130] The present disclosure provides a detailed description of an indoor air conditioning unit and an air conditioning system. Specific embodiments have been used to illustrate the principles and implementation methods of the present disclosure. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of the present disclosure. It should be noted that those skilled in the art can make various improvements and modifications to the present disclosure without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this disclosure.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: A housing (1) having a first air outlet (10) and a second air outlet (20), the housing (1) including a top plate (11) and a bottom plate (12), the first air outlet (10) being disposed on the top plate (11) and used for air outlet in cooling mode, and the second air outlet (20) being disposed on the bottom plate (12) and used for air outlet in heating mode; and A fan (2') includes a volute assembly (2), the volute assembly (2) including a fixed volute (21) and a movable volute (22), the movable volute (22) being rotatably disposed within the fixed volute (21) about the central axis of the fan (2') to allow the indoor unit of the air conditioner to switch between an upper air outlet state in the cooling mode and a lower air outlet state in the heating mode, the central axis extending along a first direction (x).

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The housing (1) has a first return air inlet (30) and a second return air inlet (40). The first return air inlet (30) is at least located in the bottom area of ​​the housing (1) and is used for return air in cooling mode. The second return air inlet (40) is at least located in the top area of ​​the housing (1) and is used for return air in heating mode. Both the first return air inlet (30) and the second return air inlet (40) are connected to the air inlet (220) of the volute assembly (2).

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The housing (1) also includes a front plate (14), which is connected between the top plate (11) and the bottom plate (12); The indoor unit of the air conditioner also includes a heat exchanger (3) extending along the first direction (x), the heat exchanger (3) being disposed between the fan (2') and the front panel (14) along the second direction (y), the second direction (y) being perpendicular to the first direction (x), a return air duct being formed between the heat exchanger (3) and the front panel (14), the return air duct being connected to the first return air inlet (30) and the second return air inlet (40).

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The first return air inlet (30) and the first air outlet (10) are located on both sides of the heat exchanger (3) along the second direction (y). The second return air inlet (40) and the second air outlet (20) are located on both sides of the heat exchanger (3) along the second direction (y). The second return air inlet (40) is located closer to the front plate (14) relative to the first air outlet (10). The first return air inlet (30) is located closer to the front plate (14) relative to the second air outlet (20).

5. The indoor unit of the air conditioner according to claim 3, characterized in that, The heat exchanger (3) includes a first heat exchange plate (31) and a second heat exchange plate (32), the first heat exchange plate (31) and the second heat exchange plate (32) are connected at an obtuse angle, and the opening of the angle faces the fan (2').

6. The indoor unit of the air conditioner according to claim 2, characterized in that, The second return air vent (40) is disposed on the top plate (11); and / or The housing (1) further includes a front plate (14), which is connected between the top plate (11) and the bottom plate (12), and the front plate (14) and the bottom plate (12) are connected by a transition plate (16), and the first return air vent (30) is disposed on the transition plate (16).

7. The indoor unit of the air conditioner according to claim 2, characterized in that, A first guide plate (121) is rotatably provided at the first return air inlet (30), and a second guide plate (111) is rotatably provided at the second return air inlet (40); When the indoor unit of the air conditioner is in the downward air outlet state, the second guide plate (111) is tilted upward relative to the second return air vent (40) and the first guide plate (121) covers the first return air vent (30); when the indoor unit of the air conditioner is in the upward air outlet state, the first guide plate (121) is opened outward relative to the first return air vent (30) and the second guide plate (111) covers the second return air vent (40).

8. The indoor unit of the air conditioner according to claim 2, characterized in that, The housing (1) also includes a front plate (14), which is connected between the top plate (11) and the bottom plate (12); When the indoor unit of the air conditioner is in the upward air outlet state or the downward air outlet state, the front panel (14) is moved outward as a whole to form an air inlet area around it, and the air inlet area serves as the first return air inlet (30) or the second return air inlet (40).

9. The indoor unit of the air conditioner according to claim 1, characterized in that, A third guide plate (112) is rotatably provided at the first air outlet (10), and a fourth guide plate (122) is rotatably provided at the second air outlet (20); When the indoor unit of the air conditioner is in the upward air outlet state, the third guide plate (112) is tilted upward relative to the first air outlet (10) and the fourth guide plate (122) covers the second air outlet (20); when the indoor unit of the air conditioner is in the downward air outlet state, the fourth guide plate (122) is tilted downward relative to the second air outlet (20) and the third guide plate (112) covers the first air outlet (10).

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The housing (1) also includes a front plate (14), which is connected between the top plate (11) and the bottom plate (12). The third guide plate (112) is rotatably connected to one end of the first air outlet (10) away from the front plate (14) along a second direction (y), which is perpendicular to the first direction (x).

11. The indoor unit of the air conditioner according to claim 1, characterized in that, The acute angle between the air outlet (20) and the horizontal plane is 60° to 70°; and / or The acute angle between the air outlet (10) and the horizontal plane is no greater than 30°.

12. The air conditioning indoor unit according to any one of claims 1 to 11, characterized in that, The volute assembly (2) has an air inlet (220), and the fixed volute (21) includes an upper air outlet (211) and a lower air outlet (212). The upper air outlet (211) is connected to the first air outlet (10), and the lower air outlet (212) is connected to the second air outlet (20). In the upper air outlet state, the air inlet (220) is connected to the upper air outlet (211) to form a first air outlet duct for air outlet in the cooling mode; in the lower air outlet state, the air inlet (220) is connected to the lower air outlet (212) to form a second air outlet duct for air outlet in the heating mode.

13. The indoor unit of the air conditioner according to claim 12, characterized in that, The housing (1) also includes a front plate (14), which is connected between the top plate (11) and the bottom plate (12). The upper air outlet (211) is located along the second direction (y) on the side of the lower air outlet (212) close to the front plate (14), and the second direction (y) is perpendicular to the first direction (x).

14. The indoor unit of the air conditioner according to claim 12, characterized in that, The acute angle between the air outlet (212) and the horizontal plane is 60° to 70°.

15. The indoor unit of the air conditioner according to claim 12, characterized in that, The housing (1) further includes a front plate (14), which is connected between the top plate (11) and the bottom plate (12). In the projection plane perpendicular to the first direction (x), with the projection point of the central axis as the vertex of the included angle, the first line connecting the center of the upper air outlet (211) and the vertex of the included angle and the second line connecting the center of the lower air outlet (212) and the vertex of the included angle form a preset angle (α) on the side facing the front plate (14). The preset angle (α) ranges from 130° to 180°.

16. The indoor unit of the air conditioner according to claim 15, characterized in that, The preset included angle (α) ranges from 150° to 170°.

17. The indoor unit of an air conditioner according to any one of claims 1 to 11, characterized in that, One end of the moving volute (22) is provided with a stop (221), which is configured to abut against and be limited by the inner wall of the fixed volute (21) when the moving volute (22) is rotated into position.

18. The indoor unit of an air conditioner according to any one of claims 1 to 11, characterized in that, Multiple fans (2') are spaced apart along the first direction (x). Each fan (2') also includes a centrifugal fan blade (23). The indoor unit of the air conditioner also includes a drive component and a connector (4). The output end of the drive component is connected to the connector (4). The connector (4) is connected between the centrifugal fan blades (23) of two adjacent fans (2').

19. An air conditioning unit, characterized in that, Includes the air conditioning indoor unit as described in any one of claims 1 to 18.

Images