Air conditioning indoor units and air conditioning units

Abstract

This disclosure relates to an indoor air conditioning unit and an air conditioning system. The indoor air conditioning unit includes: a housing with a first air outlet on its top plate for cooling mode and a second air outlet on its bottom plate for heating mode; a cross-flow fan disposed within the housing and extending in a second direction; and a heat exchange assembly disposed between the top plate and the cross-flow fan, including a first heat exchanger and a second heat exchanger, the top ends of the first and second heat exchangers being close to each other, the bottom end of the first heat exchanger extending obliquely towards the front plate, and the bottom end of the second heat exchanger extending obliquely towards the rear plate; and a water receiving component including a first water receiving tray and a second water receiving tray, the first water receiving tray being disposed below the bottom end of the first heat exchanger, and the inner bottom surface of the first water receiving tray having a first protrusion for supporting the bottom of the first heat exchanger; the second water receiving tray being disposed below the bottom end of the second heat exchanger, and the inner bottom surface of the second water receiving tray having a second protrusion for supporting the bottom of the second heat exchanger.

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, most mainstream air conditioner indoor units on the market share the same air duct in different operating modes, such as cooling and heating, with the air outlet designed at the bottom, mostly bottom-discharge. However, the different physical characteristics of cold and hot air place different requirements on the air duct and the direction of air in and out. A single air duct will limit the air delivery range and the cooling and heating effect.

[0003] As people's quality of life improves, they have higher requirements for the cooling and heating performance of air conditioners, leading to the development of indoor air conditioning units with both top and bottom air outlets. However, the design of the drip tray for these units is more challenging due to the air outlets at the bottom. Utility Model Content

[0004] The embodiments of this disclosure provide an indoor air conditioning unit and an air conditioning system that make it easier to install a water collection tray on an indoor air conditioning unit with top and bottom air outlets.

[0005] According to one aspect of this disclosure, an air conditioning indoor unit is provided, comprising:

[0006] The housing includes a top plate, a bottom plate, a front plate, and a rear plate. The top plate has a first air outlet for air outlet in cooling mode, the bottom plate has a second air outlet for air outlet in heating mode, and the front plate and the rear plate are connected between the top plate and the bottom plate and are spaced apart along a first direction.

[0007] A cross-flow fan, housed within a casing and extending along a second direction perpendicular to the first direction; and

[0008] A heat exchange assembly is disposed between the top plate and the cross-flow fan, and includes a first heat exchanger and a second heat exchanger. The top ends of the first and second heat exchangers are close to each other, the bottom end of the first heat exchanger extends inclined towards the front plate, and the bottom end of the second heat exchanger extends inclined towards the rear plate; and

[0009] The water receiving component includes a first water receiving tray and a second water receiving tray. The first water receiving tray is located below the bottom end of the first heat exchanger, and the inner bottom surface of the first water receiving tray is provided with a first protrusion for supporting the bottom of the first heat exchanger. The second water receiving tray is located below the bottom end of the second heat exchanger, and the inner bottom surface of the second water receiving tray is provided with a second protrusion for supporting the bottom of the second heat exchanger.

[0010] In some embodiments, both the first protrusion and the second protrusion include a plurality of bosses spaced apart along a second direction.

[0011] In some embodiments, the root width of the first protrusion and the second protrusion is greater than the top width.

[0012] In some embodiments, gaps are provided between the two sides of the first heat exchanger and the two side walls of the first water receiving tray; and / or

[0013] There are gaps between the two sides of the second heat exchanger and the two side walls of the second water receiving pan.

[0014] In some embodiments, the first water receiving tray includes a first sidewall disposed near the front panel;

[0015] The indoor unit of the air conditioner also includes a first air duct side panel. The bottom end of the first air duct side panel is connected to the first side wall, and the top end of the first air duct side panel extends upward to the area adjacent to the top panel and the front panel. The first air duct side panel is connected to the front panel.

[0016] In some embodiments, the first air duct side plate includes:

[0017] Main body panel;

[0018] A bent plate, one end of which is connected to the top of the main plate, and the other end which is inclined toward the front plate and abuts against the front plate; and

[0019] Two mounting plates are respectively located at both ends of the main body plate along the second direction, and both are detachably connected to the front plate.

[0020] In some embodiments, the first water receiving tray includes:

[0021] The first bottom wall is inclined, with the first end near the front panel being higher than the second end away from the front panel;

[0022] The first sidewall is connected to the first end of the first bottom wall; and

[0023] The second sidewall is connected to the second end of the first bottom wall.

[0024] In some embodiments, the indoor unit of the air conditioner further includes a support member connected to the inner surface of the rear panel, and a second drip tray supported on the top surface of the support member.

[0025] In some embodiments, the second water receiving tray includes a second bottom wall, and both the second bottom wall and the support surface of the supporting component are horizontally arranged.

[0026] In some embodiments, the second water receiving tray includes a third sidewall disposed near the rear panel;

[0027] The indoor unit of the air conditioner also includes a second air duct side panel. The bottom end of the second air duct side panel is connected to the third side wall, and the top end of the second air duct side panel extends upward to the area adjacent to the top panel and the rear panel. The second air duct side panel is connected to the rear panel.

[0028] In some embodiments, the first water receiving tray includes a first bottom wall and a second side wall, the second side wall being connected to the second end of the first bottom wall away from the front plate, and the second side wall being higher than the bottom of the first heat exchanger and extending obliquely upward by a first predetermined distance; and / or

[0029] The second water receiving tray includes a second bottom wall and a fourth side wall. The fourth side wall is connected to the second end of the second bottom wall away from the rear plate. The fourth side wall is higher than the bottom of the second heat exchanger and extends obliquely upward by a second preset distance.

[0030] In some embodiments, the first water receiving tray and the second water receiving tray extend along the second direction and have a length not less than that of the heat exchange component, and the water receiving component further includes:

[0031] The third water receiving tray is connected between the first ends of the first and second water receiving trays along the second direction; and

[0032] The fourth water receiving tray is connected between the second ends of the first and second water receiving trays along the second direction.

[0033] In some embodiments, the second water receiving tray is provided with drain outlets at both ends along the second direction on the third sidewall near the rear plate.

[0034] In some embodiments, the inner surfaces of the first and second water trays are higher than the sides in the middle region along the second direction.

[0035] In some embodiments, the third water tray is connected to the first end of the first water tray at a higher level than the second end of the second water tray, and the fourth water tray is connected to the first end of the first water tray at a higher level than the second end of the second water tray.

[0036] In some embodiments, the cross-flow fan includes:

[0037] Crossflow fan blades; and

[0038] The air duct assembly includes an interconnected volute and a volute tongue, which are spaced apart circumferentially along the cross-flow fan blades to form an air duct inlet and an air duct outlet on the circumferential sidewall of the air duct assembly. The air duct assembly is rotatable about the central axis of the cross-flow fan blades to allow the indoor unit of the air conditioner to switch between an upper air outlet state in cooling mode and a lower air outlet state in heating mode.

[0039] According to another aspect of this disclosure, an air conditioning unit is proposed, including the indoor unit of the above-described embodiments.

[0040] Based on the above technical solution, the indoor unit of the air conditioner in this embodiment can realize air outlet at both the top and bottom. Since a second air outlet is provided on the bottom plate, the water receiving component is arranged in the height direction between the heat exchange component and the cross-flow fan, which can make full use of the space between the cross-flow fan and the heat exchange component in the casing and reliably receive the condensate flowing down from the heat exchange component.

[0041] Furthermore, by providing a first protrusion on the inner bottom surface of the first water receiving tray and a second protrusion on the inner bottom surface of the second water receiving tray, the first and second protrusions can provide stable support for the bottom of the first and second heat exchangers, respectively, thus playing a better auxiliary support role, improving the installation stability of the heat exchange components, and preventing shaking under airflow or after long-term use. Attached Figure Description

[0042] 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:

[0043] Figure 1 This is a schematic diagram of the air outlet state of some embodiments of the air conditioner indoor unit in heating mode.

[0044] Figure 2 This is a schematic diagram of the cross-flow fan in heating mode.

[0045] Figure 3 This is a schematic diagram of the air conditioner indoor unit in cooling mode with the air outlet in some embodiments of the present disclosure.

[0046] Figure 4 This is a schematic diagram of the cross-flow fan in cooling mode.

[0047] Figure 5 This is a perspective view of some embodiments of the heat exchange components and water receiving components in the indoor unit of an air conditioner disclosed herein.

[0048] Figure 6 This is a side view of some embodiments of the heat exchange components and water receiving parts in the indoor unit of an air conditioner disclosed herein.

[0049] Figure 7 This is a top view of some embodiments of the water receiving component in the indoor unit of an air conditioner disclosed herein.

[0050] Explanation of reference numerals in the attached figures

[0051] 1. Shell; 11. Top plate; 111. First air guide plate; 12. Bottom plate; 121. Second air guide plate; 13. Front plate; 14. Rear plate;

[0052] 2. Crossflow fan; 21. Crossflow fan blade; 22. Volute casing; 23. Volute tongue; 24. Duct inlet; 25. Duct outlet; 26. Duct turntable; 27. Volute tongue turntable;

[0053] 3. Heat exchange components; 31. First heat exchanger; 32. Second heat exchanger;

[0054] 4. First water receiving tray; 41. First bottom wall; 42. First side wall; 43. Second side wall;

[0055] 5. Second water receiving tray; 51. Second bottom wall; 52. Third side wall; 53. Fourth side wall; 54. Drain outlet;

[0056] 6. First air duct side plate; 61. Main body plate; 62. Bending plate; 63. Mounting plate; 631. Mounting hole; 64. Reinforcing plate;

[0057] 6', Second air duct side panel;

[0058] 7. Supporting components;

[0059] 8. Third water receiving tray;

[0060] 9. Fourth water receiving tray;

[0061] 10. First air outlet;

[0062] 20. Second air outlet;

[0063] 30. Air duct baffle;

[0064] 40. First protrusion; 401. Boss;

[0065] 50. Second protrusion;

[0066] 60. Filter screen;

[0067] 70. Electric heating components;

[0068] 80. Second drive component;

[0069] x, first direction; y, second direction; z, third direction. Detailed Implementation

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] The inventors discovered that conventional air conditioner indoor units typically have the condensate drain pan mounted on the base plate, which provides ample space and facilitates the installation of water channels. However, for air conditioner indoor units with top and bottom air outlets, the bottom is the lower air outlet. Placing the drain pan on the base plate would obstruct the airflow. Furthermore, if the drain pan is improperly positioned, condensate would be directly blown out of the unit through the lower airflow duct, without a base plate or other structure to buffer and store it. In addition, top and bottom air outlets require the rotation of the airflow duct components, which occupy a significant portion of the unit's volume, and there is no space on the horizontal side of the airflow duct components to install a drain pan.

[0077] Based on the above problems, this disclosure proposes an air conditioner indoor unit, such as... Figures 1 to 7 As shown, in some embodiments, the indoor unit of the air conditioner includes:

[0078] The housing 1 includes a top plate 11, a bottom plate 12, a front plate 13 and a rear plate 14. The top plate 11 is provided with a first air outlet 10 for air outlet in cooling mode, and the bottom plate 12 is provided with a second air outlet 20 for air outlet in heating mode. The front plate 13 and the rear plate 14 are connected between the top plate 11 and the bottom plate 12 and are spaced apart along the first direction x.

[0079] A cross-flow fan 2 is disposed within a housing 1 and extends along a second direction y, the second direction y being perpendicular to the first direction x; and

[0080] Heat exchange assembly 3 is disposed between top plate 11 and cross-flow fan 2, and includes a first heat exchanger 31 and a second heat exchanger 32. The top ends of the first heat exchanger 31 and the second heat exchanger 32 are close to each other. The bottom end of the first heat exchanger 31 extends inclinedly towards the front plate 13, and the bottom end of the second heat exchanger 32 extends inclinedly towards the rear plate 14; and

[0081] The water receiving component includes a first water receiving tray 4 and a second water receiving tray 5. The first water receiving tray 4 is located below the bottom end of the first heat exchanger 31, and the inner bottom surface of the first water receiving tray 4 is provided with a first protrusion 40 for supporting the bottom of the first heat exchanger 31. The second water receiving tray 5 is located below the bottom end of the second heat exchanger 32, and the inner bottom surface of the second water receiving tray 5 is provided with a second protrusion 50 for supporting the bottom of the second heat exchanger 32.

[0082] Specifically, the first direction x can be the width direction of the housing 1, the second direction y is the length direction of the housing 1, and the third direction z is the height direction of the housing 1, which is perpendicular to the first direction x and the second direction y. The top plate 11 and the bottom plate 12 are spaced apart relative to each other along the third direction z. The housing 1 also includes two side plates, which are connected between the top plate 11 and the bottom plate 12 and spaced apart along the second direction y. The top plate 11, the bottom plate 12, the front plate 13, the rear plate 14, and the two side plates form an accommodating space.

[0083] Optionally, the top plate 11, bottom plate 12, front plate 13, rear plate 14 and two side plates may be straight plates, curved plates, a combination of straight plates and curved plates, or other shapes.

[0084] The cross-flow fan 2 is located inside the housing 1 and extends along the second direction y. The upper and lower air ducts can be switched by rotating the air duct assembly of the cross-flow fan 2 around the rotation center, so that the indoor unit of the air conditioner can switch between the upper air outlet state in the cooling mode and the lower air outlet state in the heating mode.

[0085] The heat exchange assembly 3 is disposed between the top plate 11 and the cross-flow fan 2 in the third direction z, and includes a first heat exchanger 31 and a second heat exchanger 32. The top ends of the first heat exchanger 31 and the second heat exchanger 32 are close to each other, and the sides of the top ends can abut against each other or maintain a preset gap. The top ends can be disposed close to the top plate 11 and located in the middle region of the housing 1 along the first direction x. The bottom end of the first heat exchanger 31 extends obliquely towards the front plate 13, that is, the bottom end of the second heat exchanger 32 is obliquely to the left relative to the top end. The bottom end of the second heat exchanger 32 extends obliquely towards the rear plate 14, that is, the bottom end of the second heat exchanger 32 is obliquely to the right relative to the top end. The first heat exchanger 31 and the second heat exchanger 32 form an inverted V-shaped structure, and the middle can serve as an air duct.

[0086] The first water receiving tray 4 and the second water receiving tray 5 are disposed inside the housing 1 and are spaced apart along the first direction x, and both extend along the second direction y.

[0087] The first water receiving tray 4 is located below the bottom of the first heat exchanger 31. The condensate generated by the first heat exchanger 31 can flow downwards along its surface into the first water receiving tray 4. The width of the first protrusion 40 is smaller than the width of the first water receiving tray 4. Preferably, the first protrusion 40 is located in the middle region of the first water receiving tray 4 along the width direction (in a plane perpendicular to the second direction y), so that condensate flow channels are formed on both sides of the first protrusion 40 along the width direction.

[0088] The second water receiving tray 5 is located below the bottom of the second heat exchanger 32. The condensate generated by the second heat exchanger 32 can flow downwards along its surface into the second water receiving tray 5. The width of the second protrusion 50 is smaller than the width of the second water receiving tray 5. Preferably, the second protrusion 50 is located in the middle region of the second water receiving tray 5 along the width direction (in a plane perpendicular to the second direction y), so that condensate flow channels are formed on both sides of the second protrusion 50 along the width direction.

[0089] On one hand, the indoor unit of this embodiment has a first air outlet 10 and a second air outlet 20 respectively on the top plate 11 and the bottom plate 12, which can realize vertical air outlet. Since the second air outlet 20 is provided on the bottom plate 12, the water receiving component is located in the middle area of ​​the housing 1 along the height direction between the heat exchange component 3 and the cross-flow fan 2. This can make full use of the space between the cross-flow fan 2 and the heat exchange component 3 in the housing 1, and reliably receive the condensate flowing down from the heat exchange component 3. The condensate generated by the heat exchanger can flow into the corresponding water receiving tray along the first protrusion 40 and the second protrusion 50, preventing water droplets from splashing into the air duct, and at the same time reducing the dripping sound, making the operation of the indoor unit of the air conditioner quieter.

[0090] Furthermore, since the heat exchange component 3 is located in the top area inside the housing 1 and has a large length along the second direction y, it needs to be installed and fixed more stably. By providing a first protrusion 40 on the inner bottom surface of the first water receiving tray 4 and a second protrusion 50 on the inner bottom surface of the second water receiving tray 5, the first protrusion 40 and the second protrusion 50 can provide stable support for the bottom of the first heat exchanger 31 and the bottom of the second heat exchanger 32, respectively, playing a better auxiliary support role, improving the installation stability of the heat exchange component, and preventing shaking under the action of airflow or after long-term use.

[0091] Furthermore, this support structure is simple, requiring only the sidewalls of the drip tray to be machined into a flat surface, making it easy to manufacture. Moreover, by using a protruding support on the inner bottom surface of the drip tray, the protrusion fits well with the bottom of the heat exchanger, reducing the likelihood of incomplete contact, improving support reliability, and lowering the precision requirements for the protrusion's machining. Additionally, since the bottom of the heat exchanger is supported only by the protrusion, the bottom area of ​​the heat exchanger's airflow-facing side can still be exposed to airflow, ensuring sufficient heat exchange area, and the condensate produced by the heat exchanger can drain smoothly into the drip tray. Finally, this drip tray support structure eliminates the need for additional support or positioning structures on the sidewalls, reducing lateral space occupation, improving space utilization, and reducing the thickness of the indoor air conditioning unit (e.g., a wall-mounted unit) protruding from the wall.

[0092] However, if a bent structure is installed on the side wall of the water receiving pan for support, the manufacturing process is more difficult. Since the entire side wall of the water receiving pan needs to be in contact with the heat exchanger for support, it is easy to have a false contact. The dimensional accuracy requirements for the bent structure of the side wall of the water receiving pan are very high. Moreover, since the side wall of the water receiving pan is in contact with the heat exchanger, the bottom area of ​​the heat exchanger cannot be traversed by airflow, which reduces the effective utilization area of ​​the heat exchanger. Furthermore, the condensate produced by the heat exchanger is not conducive to flowing into the water receiving pan.

[0093] On the other hand, the indoor unit of this embodiment can switch between the upward air outlet state in cooling mode and the downward air outlet state in heating mode, enabling cold air to blow upward and hot air to blow downward, 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, solving the problems of hot air rising, small air delivery range, and poor effect in heating mode. By setting air outlets on the top plate 11 and bottom plate 12 respectively to achieve upward and downward air delivery, it is not necessary to forcibly guide the airflow at the fan outlet to change the airflow direction, which can reduce airflow impact loss and increase the air delivery range during cooling and heating, thereby improving human comfort.

[0094] 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.

[0095] In some embodiments, such as Figure 7 As shown, both the first protrusion 40 and the second protrusion 50 include a plurality of protrusions 401 spaced apart along the second direction y.

[0096] The first water receiving tray 4 and the second water receiving tray 5 extend along the second direction y and have a length not less than that of the heat exchange component 3. Multiple protrusions 401 within the same water receiving tray can be evenly spaced along the second direction y. One protrusion 401 can be provided near each end of the first water receiving tray 4 and the second water receiving tray 5, while the remaining protrusions 401 can be located in the middle area. This provides better support for the heat exchanger at the ends of the water receiving trays. For example, the length of the protrusion 401 can be 30cm, without affecting water flow.

[0097] Optionally, the first protrusion 40 and the second protrusion 50 may also extend continuously along the second direction y, and their length may be less than the length of the heat exchanger or the same as the length of the heat exchanger.

[0098] In this embodiment, the first protrusion 40 and the second protrusion 50 are configured as multiple spaced bosses 401. These bosses 401 provide stable support to the heat exchanger through multi-point contact, preventing incomplete contact and reducing the precision requirements for the height dimensions of the bosses 401. Furthermore, condensate flowing down the heat exchanger surface can flow smoothly through the space between adjacent bosses 401, ensuring effective drainage. Airflow can also flow smoothly from the bottom of the heat exchanger through the area between adjacent bosses 401, fully utilizing the bottom of the heat exchanger for heat exchange and improving heat exchange efficiency. In addition, this support structure saves material and weight.

[0099] In some embodiments, such as Figure 6 As shown, the root width of the first protrusion 40 and the second protrusion 50 is greater than the top width.

[0100] For example, the angles between the two sides of the first protrusion 40 and the first bottom wall 41 are both obtuse angles, or one side has an obtuse angle and the other a right angle, and the top surface of the first protrusion 40 is configured to fit against the bottom surface of the first heat exchanger 31. Similarly, the angles between the two sides of the second protrusion 50 and the second bottom wall 51 are both obtuse angles, or one side has an obtuse angle and the other a right angle, and the top surface of the second protrusion 50 is configured to fit against the bottom surface of the second heat exchanger 32.

[0101] Alternatively, the first protrusion 40 and the second protrusion 50 may also have the same width from the root to the top.

[0102] In this embodiment, the first protrusion 40 and the second protrusion 50 are configured in a trapezoidal shape. The larger root width increases the structural strength of the connection with the bottom wall of the water receiving pan. When the heat exchanger is heavy, it can prevent the protrusion from deforming, resulting in more stable and reliable support. Moreover, the smaller top width of the protrusion can prevent the bottom surface of the heat exchanger from tilting, which would cause a large sharp corner at the top of the protrusion, reducing the stress on the protrusion and preventing injury to operators.

[0103] In some embodiments, such as Figure 6 As shown, gaps are provided between the two sides of the first heat exchanger 31 and the two side walls of the first water receiving pan 4; and / or gaps are provided between the two sides of the second heat exchanger 32 and the two side walls of the second water receiving pan 5.

[0104] This embodiment incorporates gaps between the two sides of the heat exchanger and the two side walls of the water collection tray. This allows the bottom of the heat exchanger to smoothly enter the water collection tray even if there are deviations in its installation angle or position, reducing installation difficulty, preventing damage to the bottom of the heat exchanger, and preventing the side walls of the water collection tray from being squeezed and deformed. Furthermore, regardless of whether the airflow is from the top or bottom, some airflow can smoothly pass through the gaps between the heat exchanger and the side walls of the water collection tray to reach the other side, ensuring sufficient heat exchange at the bottom of the heat exchanger, maximizing the heat exchange area, and improving heat exchange efficiency. Additionally, condensate on the surface of the heat exchanger can also smoothly fall into the water collection tray through the gaps, improving condensate collection efficiency.

[0105] In some embodiments, such as Figure 1 , Figure 3 and Figure 6 As shown, the first water receiving tray 4 includes a first side wall 42, which is located near the front panel 13; the air conditioning indoor unit also includes a first air duct side plate 6, the bottom end of which is connected to the first side wall 42, and the top end of which extends upward to abut against the area adjacent to the top panel 11 and the front panel 13, and the first air duct side plate 6 is connected to the front panel 13.

[0106] The top of the first air duct side plate 6 can be connected to the front plate 13 by tilting or bending, and the first air duct side plate 6 is used to form the air duct side wall.

[0107] This embodiment takes into account that Figure 3 In the cooling mode shown, the air inlet area is located between the front panel 13 and the bottom panel 12. To avoid obstructing the smooth flow of air into the duct inlet 24, it is inconvenient to install support components at the bottom of the first water tray 4. Furthermore, since some moving parts are located at the front panel 13, it is also inconvenient to install support components at the bottom of the first water tray 4. By installing a first duct side plate 6 above the first side wall 42 for suspension support, fixation can be achieved without installing support components at the bottom of the first water tray 4, providing stable support for the first heat exchanger 31 and ensuring smooth airflow into the duct inlet 24 even in cooling mode. In addition, the top of the first duct side plate 6 extends upwards to abut against the area adjacent to the top panel 11 and the front panel 13, forming a sealed duct on the side of the heat exchange assembly 3.

[0108] In some embodiments, such as Figure 5 and Figure 6 As shown, the first air duct side plate 6 includes:

[0109] Main board 61;

[0110] A bent plate 62, one end of which is connected to the top of the main body plate 61, and the other end which is inclined toward and abuts against the front plate 13; and

[0111] Two mounting plates 63 are respectively located at both ends of the main body plate 61 along the second direction y, and both are detachably connected to the front plate 13.

[0112] The main body plate 61 extends along the second direction y, and its length is substantially the same as that of the first heat exchanger 31. The other end of the bent plate 62 is inclined towards and abuts against the front plate 13 to form a sealed air duct. Two mounting plates 63 are respectively disposed at both ends of the main body plate 61 along the second direction y and extend outwards. Each mounting plate 63 may have one or more mounting holes 631 for detachable connection to the front plate 13 via fasteners. Multiple reinforcing plates 64 may be spaced apart along the second direction y in the area between the main body plate 61 and the bent plate 62.

[0113] In this embodiment, mounting plates 63 are provided at both ends of the main body plate 61 along the second direction y, and the first water receiving tray 4 is fixed to the front plate 13 by the mounting plates 63. This two-end mounting method can reliably and stably fix the first water receiving tray 4, playing a major fixing role, while the first protrusion 40 inside the first water receiving tray 4 plays an auxiliary supporting role. The combination of the two methods can improve the support effect on the first heat exchanger 31. When the first heat exchanger 31 is arranged in the upper region, in addition to being fixed at both ends, the first water receiving tray 4 is also fixed in the middle region by the first protrusion 40 to prevent it from being in a suspended state. After long-term use, the support force on the first heat exchanger 31 can be more even.

[0114] Furthermore, one end of the bent plate 62 is connected to the top of the main body plate 61, and the other end is inclined towards and abuts against the front plate 13. This not only achieves a sealed air duct, but also ensures that if the first air outlet 10 extends forward to a position adjacent to the front plate 13, Figure 1 In the heating mode, when the airflow enters from the first air outlet 10, the inclined surface of the bent plate 62 can guide the airflow inward; Figure 3 In the cooling mode shown, when the airflow flows out from the first air outlet 10, the inclined surface of the bending plate 62 can guide the airflow outward. Thus, the inclined surface can play a guiding role, making the airflow enter or leave more smoothly and reducing resistance.

[0115] In some embodiments, such as Figure 6 As shown, the first water receiving tray 4 includes:

[0116] The first bottom wall 41 is inclined, and the first end near the front plate 13 is higher than the second end away from the front plate 13;

[0117] The first sidewall 42 is connected to the first end of the first bottom wall 41; and

[0118] The second sidewall 43 is connected to the second end of the first bottom wall 41.

[0119] In this embodiment, the first bottom wall 41 of the first water receiving tray 4 is inclined, which makes the inclination of the first bottom wall 41 more consistent with that of the bottom surface of the first heat exchanger 31, allowing the first water receiving tray 4 to adapt to the shape of the first heat exchanger 31. This provides better support for the bottom of the first heat exchanger 31 through the first protrusion 40, reduces the height of the first protrusion 40, and improves structural strength. When the first water receiving tray 4 is installed on the front plate 13 through the first air duct side plate 6, a support structure is also provided at the bottom of the first water receiving tray 4, providing conditions for the inclined setting of the first bottom wall 41. Moreover, it can reduce the space occupied by the first water receiving tray 4, leaving space for the installation of other structural components, making the internal structure more compact. In addition, the inclined setting of the first bottom wall 41 facilitates the smooth flow of condensate to the area near the rear plate 14, so as to quickly discharge the condensate.

[0120] In some embodiments, the indoor unit of the air conditioner further includes a support member 7 connected to the inner surface of the rear panel 14, and a second water tray 5 supported on the top surface of the support member 7.

[0121] For example, such as Figure 1 As shown, the supporting component 7 can be a tray fixed to the rear plate 14 by a plate-like structure, and the second water receiving tray 5 is supported in the slot on the top of the tray.

[0122] This embodiment takes into account that no other moving parts are provided in the area near the middle and lower part between the rear plate 14 and the cross-flow fan 2, and this area is not used as an air duct. Therefore, the support component 7 is fixed on the rear plate 14, which can provide stable and reliable support for the second water receiving tray 5 from the bottom. Its support effect is better than that of suspension fixation, and it can make full use of the space without affecting the airflow of the air duct. Specifically, the support component 7 supports the second water receiving tray 5, and the second protrusion 50 in the second water receiving tray 5 supports the bottom of the second heat exchanger 32. Thus, this structure can provide a good fixation for the second heat exchanger 32.

[0123] In some embodiments, the second water receiving tray 5 includes a second bottom wall 51, and the second bottom wall 51 and the supporting surface of the supporting member 7 are both horizontally arranged.

[0124] Optionally, the supporting surface of the supporting component 7 and the second bottom wall 51 may also be inclined and fit together.

[0125] This embodiment achieves a stable support effect by setting both the support surface of the support component 7 and the second bottom wall 51 horizontally. The second water receiving tray 5 is less likely to slide on the support surface of the support component 7, which improves the stability of the support for the second heat exchanger 32.

[0126] In some embodiments, such as Figure 1 and Figure 3 As shown, the second water receiving tray 5 includes a third side wall 52, which is located near the rear plate 14;

[0127] The indoor unit of the air conditioner also includes a second air duct side panel 6'. The bottom end of the second air duct side panel 6' is connected to the third side wall 52, and the top end of the second air duct side panel 6' extends upward to abut against the area adjacent to the top panel 11 and the rear panel 14. The second air duct side panel 6' is connected to the rear panel 14.

[0128] This embodiment achieves fixation by setting a second air duct side plate 6' in the area near the rear plate 14. The bottom end of the second air duct side plate 6' is connected to the third side wall 52 of the second water receiving tray 5, and the top end of the second air duct side plate 6' extends upward to abut against the area adjacent to the top plate 11 and the front plate 13, forming a sealed air duct on the side of the heat exchange assembly 3. Moreover, by using the supporting component 7 and the second air duct side plate 6' to restrict the multi-directional degrees of freedom of the second water receiving tray 5, it is possible to prevent the second water receiving tray 5 from shifting or loosening due to bumps or tilting during the transportation of the unit.

[0129] In some embodiments, the first water receiving tray 4 includes a first bottom wall 41 and a second side wall 43. The second side wall 43 is connected to the second end of the first bottom wall 41 away from the front plate 13, and the second side wall 43 is higher than the bottom of the first heat exchanger 31 and extends obliquely upward by a first preset distance; and / or

[0130] The second water receiving tray 5 includes a second bottom wall 51 and a fourth side wall 53. The fourth side wall 53 is connected to the second end of the second bottom wall 51 away from the rear plate 14. The fourth side wall 53 is higher than the bottom of the second heat exchanger 32 and extends obliquely upward by a second preset distance.

[0131] For example, the second sidewall 43 may be arranged parallel to the inner surface of the first heat exchanger 31, or the top end of the second sidewall 43 may be inclined outward relative to the bottom end to ensure that the first heat exchanger 31 can be installed smoothly. Alternatively, the fourth sidewall 53 may be arranged parallel to the inner surface of the second heat exchanger 32, or the top end of the fourth sidewall 53 may be inclined outward relative to the bottom end to ensure that the second heat exchanger 32 can be installed smoothly.

[0132] like Figure 6 As shown, in the first water receiving tray 4, the angles between the first side wall 42 and the second side wall 43 and the first bottom wall 41 can both be obtuse angles. In the second water receiving tray 5, the angle between the third side wall 52 and the second bottom wall 51 is either a right angle or an obtuse angle, and the angle between the fourth side wall 53 and the second bottom wall 51 is an obtuse angle.

[0133] For example, the second sidewall 43 and / or the fourth sidewall 53 may extend from the bottom to the top in a distance of 20 cm.

[0134] This embodiment ensures that the inner wall of the water collection tray is higher than the bottom of the heat exchanger, meaning the inner wall of the water collection tray overlaps with the inner surface of the heat exchanger bottom. This prevents condensate from entering the air duct under the influence of airflow and avoids condensate overflow, allowing the unit to achieve the preset airflow. Furthermore, the first and second preset distances are configured to be slightly greater than the minimum height required to prevent condensate outflow. For example, the first and second preset distances can be the same or different, depending on the inclination of the bottom wall of the water collection tray. This minimizes the obstruction of the heat exchanger bottom by an excessively long inner wall of the water collection tray, ensuring heat exchange efficiency while preventing condensate outflow.

[0135] In some embodiments, such as Figure 5 and Figure 7 As shown, the first water receiving tray 4 and the second water receiving tray 5 extend along the second direction y and have a length not less than that of the heat exchange component 3. The water receiving component also includes:

[0136] The third water receiving tray 8 is connected between the first ends of the first water receiving tray 4 and the second water receiving tray 5 along the second direction y; and

[0137] The fourth water receiving tray 9 is connected between the second ends of the first water receiving tray 4 and the second water receiving tray 5 along the second direction y.

[0138] Among them, the third water receiving tray 8 and the fourth water receiving tray 9 both extend along the first direction x, thereby forming a square-shaped structure by the first water receiving tray 4, the second water receiving tray 5, the third water receiving tray 8 and the fourth water receiving tray 9.

[0139] The shape of the water receiving component, the number and shape of the bosses 401 are not limited to the illustrated embodiment.

[0140] This embodiment forms a rectangular frame structure for the water receiving component, with a hollow area in the middle. This hollow area allows airflow to pass through without increasing airflow resistance, and also increases the overall structural strength of the water receiving component, making it less prone to deformation and ensuring effective support for the heat exchanger. Furthermore, by providing a third water receiving tray 8 and a fourth water receiving tray 9, the first water receiving tray 4 and the second water receiving tray 5 can be interconnected, facilitating the collection of condensate to one side of the shell 1 for discharge.

[0141] In some embodiments, such as Figure 5 As shown, the second water receiving tray 5 has drain outlets 54 at both ends of the third side wall 52 near the rear plate 14 along the second direction y.

[0142] The two drain outlets 54 are positioned directly opposite the third water receiving tray 8 and the fourth water receiving tray 9, respectively. After the condensate in the first water receiving tray 4 flows into the third water receiving tray 8 and the fourth water receiving tray 9, it can be discharged directly from the two drain outlets 54.

[0143] Optionally, the second water receiving tray 5 is provided with a drain outlet 54 only at one end along the second direction y.

[0144] This embodiment features drain outlets 54 at both ends of the second water receiving pan 5 along the second direction y. After the unit starts operating, the condensate in the second water receiving pan 5 flows simultaneously to both sides and is discharged through the drain outlets 54 on both sides. Furthermore, the two ends of the second water receiving pan 5 are also close to the third water receiving pan 8 and the fourth water receiving pan 9. After the condensate in the first water receiving pan 4 flows into the third water receiving pan 8 and the fourth water receiving pan 9 respectively, it can be directly discharged from the two drain outlets 54, resulting in a shorter drainage path. This structure, by providing two drain outlets 54, improves the efficiency of condensate drainage, ensuring timely discharge and preventing condensate from accumulating in the water receiving components and being carried out by the airflow.

[0145] Moreover, when one of the drain outlets 54 fails due to blockage or other reasons, the water level in the water receiving component rises, and the accumulated water can reach the other drain outlet 54 to be discharged, preventing the water from overflowing due to blockage and giving the user time to discover the problem and carry out inspection and repair.

[0146] In some embodiments, the inner surfaces of the first water tray 4 and the second water tray 5 are higher than the sides in the middle region along the second direction y.

[0147] Among them, the inner bottom surfaces of the first water receiving tray 4 and the second water receiving tray 5 can form inclined surfaces, arc surfaces, stepped surfaces, etc. from the middle area to both sides. Correspondingly, the boss 401 can be set to different heights at different height positions in order to support the bottom surface of the heat exchanger.

[0148] In this embodiment, the bottom surface of the water receiving tray is higher in the middle area than on both sides. After the condensate enters the water receiving tray, it can flow quickly from the middle area to both sides, so that the condensate can be smoothly discharged from the drain outlets 54 on both sides, improving drainage efficiency and preventing the accumulation of condensate.

[0149] In some embodiments, the third water receiving tray 8 is connected to the first end of the first water receiving tray 4 at a higher level than the second end of the second water receiving tray 5, and the fourth water receiving tray 9 is connected to the first end of the first water receiving tray 4 at a higher level than the second end of the second water receiving tray 5.

[0150] In this embodiment, the inner bottom surfaces of the third water receiving pan 8 and the fourth water receiving pan 9 are set as inclined surfaces. When the unit is running, the condensate in the first water receiving pan 4 can be quickly discharged to the drain outlet 54 through the third water receiving pan 8 and the fourth water receiving pan 9, thereby improving drainage efficiency and preventing condensate from accumulating in the first water receiving pan 4.

[0151] like Figure 7The diagram shows the flow of condensate. After the condensate on the surface of the first heat exchanger 31 flows into the first drip tray 4, it flows to both sides due to the higher central area. It then flows along the third drip tray 8 and the fourth drip tray 9, respectively, and is discharged through the drain outlets 54 on both sides. Similarly, after the condensate on the surface of the second heat exchanger 32 flows into the second drip tray 5, it flows to both sides due to the higher central area and is directly discharged through the drain outlets 54 on both sides.

[0152] In some embodiments, such as Figure 1 and Figure 3 As shown, the cross-flow fan 2 includes:

[0153] Crossflow fan blades 21; and

[0154] The air duct assembly includes a volute 22 and a volute tongue 23 connected to each other. The volute 22 and the volute tongue 23 are circumferentially spaced along the cross-flow fan blade 21 to form an air duct inlet 24 and an air duct outlet 25 on the circumferential sidewall of the air duct assembly. The air duct assembly is rotatable about the central axis of the cross-flow fan blade 21 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.

[0155] The cross-flow fan blade 21 extends along a first direction x, forming a long cylindrical shape. The top plate 11 has a first air outlet 10, which extends along a second direction y, its length continuously covering the length of the cross-flow fan blade 21. The bottom plate 12 has a second air outlet 20, which also extends along the second direction y, its length continuously covering the length of the cross-flow fan blade 21. This structure increases the airflow volume. Optionally, the first air outlet 10 and the second air outlet 20 can be intermittently arranged along the second direction y. Optionally, the shapes of the first air outlet 10 and the second air outlet 20 can be rectangular, elliptical, circular, or any other arbitrary shape. The rotation direction of the cross-flow fan blade 21 can remain constant.

[0156] The duct assembly is rotatable around its central axis, and a first driving component for driving the rotation of the duct assembly can be disposed within the housing 1. The duct assembly includes a volute 22 and a volute tongue 23 connected to each other. The volute 22 and the volute tongue 23 are spaced apart circumferentially along the cross-flow fan blade 21 to form a duct inlet 24 and a duct outlet 25 on the circumferential sidewall of the duct assembly. The duct inlet 24 allows airflow to enter the cross-flow fan blade 21, and the duct outlet 25 allows airflow to exit from the cross-flow fan blade 21. The duct inlet 24 and the duct outlet 25 can be continuously or intermittently arranged in the second direction y.

[0157] In this embodiment, since the cross-flow fan 21 has a large length along the second direction y, it is not necessary to arrange multiple fans side by side in the second direction y. Furthermore, the first air outlet 10 and the second air outlet 20 can be arranged with a large length in the second direction y, thereby improving the uniformity of airflow along the second direction y.

[0158] The following is combined with Figures 1 to 7 Some specific embodiments of this disclosure are given.

[0159] The housing 1 includes a top plate 11, a bottom plate 12, a front plate 13, and a rear plate 14. The top plate 11 has a first air outlet 10, and a first air guide plate 111 is provided at the first air outlet 10. The first air guide plate 111 is rotatably connected to the end of the first air outlet 10 near the rear plate 14 along a first direction x. For example, one first air outlet 10 may be provided, or two or more may be arranged side-by-side along the first direction x. The bottom plate 12 has a second air outlet 20, and a second air guide plate 121 is provided at the second air outlet 20. The second air guide plate 121 is rotatably connected to the end of the second air outlet 20 near the rear plate 14 along the first direction x. For example, one second air outlet 20 may be provided, or two or more may be arranged side-by-side along the first direction x.

[0160] By placing the first air guide plate 111 on the side of the first air outlet 10 near the rear plate 14 and placing the second air guide plate 121 on the side of the second air outlet 20 near the rear plate 14, the airflow direction can be corrected by the tilting direction of the air guide plate, so that the airflow flows to the front of the wall and reaches a longer distance in the room, thus optimizing the heat exchange effect.

[0161] The heat exchange assembly includes a first heat exchanger 31 and a second heat exchanger 32, forming an inverted V shape. An electric heating element 70 is provided in the area within the angle formed by the two heat exchangers to provide auxiliary heating when the heating capacity is insufficient, thereby meeting the heating demand. A first water receiving tray 4 is provided at the bottom of the first heat exchanger 31, and a second water receiving tray 5 is provided at the bottom of the second heat exchanger 32. The structure and installation method of the water receiving components have been described in detail in the previous embodiments and will not be repeated here.

[0162] A cross-flow fan 2 is located below the water receiving assembly and includes: a cross-flow fan blade 21 and an air duct assembly. The air duct assembly includes an interconnected volute 22 and a volute tongue 23, which are spaced apart circumferentially along the cross-flow fan blade 21 to form an air duct inlet 24 and an air duct outlet 25 on the circumferential sidewall of the air duct assembly. Figure 2 and Figure 4 The air duct assembly is mounted on the air duct turntable 26, which drives the entire air duct assembly to rotate, switching between heating and cooling modes. The air duct turntable 26 rotates under the drive of the first drive component. Furthermore, a volute tongue 23 is mounted on a volute tongue turntable 27, which drives the volute tongue 23 to move circumferentially, adjusting the size of the air duct inlet 24 and air duct outlet 25 under different heat exchange modes to meet the airflow requirements of different heat exchange modes.

[0163] Below the first water receiving tray 4 is a duct baffle 30, which is rotatably mounted to abut against the volute 22 or the volute tongue 23 to form an air duct. Optionally, the indoor unit of the air conditioner also includes a second drive component 80 and a filter screen 60. For example, the second drive component 80 can be a stepper motor, which can be mounted on the front plate 13 to drive the filter screen 60 to move along the front plate 13, the top plate 11, or the bottom plate 12, so that the filter screen 60 is located at the air inlet during heat exchange to filter the airflow entering the housing 1.

[0164] like Figure 1 and Figure 2 As shown, in heating mode, the volute 22 is located in the left area and its top abuts against the air duct baffle 30, while the volute tongue 23 is located in the lower right area. Indoor airflow enters from the first air outlet 10 located above, undergoes heat exchange with the heat exchange component 3, enters from the air duct inlet 24, flows out from the air duct outlet 25, and finally blows into the room from the second air outlet 20 located below.

[0165] like Figure 3 and Figure 4 As shown, in cooling mode, the volute 22 is located in the right area, the volute tongue 23 is located in the upper left area and abuts against the air duct baffle 30. The indoor airflow enters the housing 1 from the lower second air outlet 20, enters from the air duct inlet 24, flows out from the air duct outlet 25, and after heat exchange by the heat exchange component 3, it is finally blown into the room from the upper first air outlet 10.

[0166] Secondly, embodiments of this disclosure provide an air conditioning unit, including the indoor unit of the above embodiments. For example, this indoor unit can be a wall-mounted unit, etc.

[0167] The air conditioning unit in this embodiment switches between an upward airflow state in cooling mode and a downward airflow state in heating mode via its indoor unit. This optimizes cooling and heating performance, improves user comfort, and enhances energy efficiency. Furthermore, the air outlet of this type of air conditioning unit can be made longer in the longitudinal direction, improving airflow uniformity.

[0168] In addition, in order to achieve air outlets at both the top and bottom, a second air outlet 20 is provided on the base plate 12. Therefore, the water receiving component is located in the middle area of ​​the shell 1 along the height direction between the heat exchange component 3 and the cross-flow fan 2. This can make full use of the space between the cross-flow fan 2 and the heat exchange component 3 inside the shell 1 and reliably receive the condensate flowing down from the heat exchange component 3.

[0169] Furthermore, by providing a first protrusion 40 on the inner bottom surface of the first water receiving tray 4 and a second protrusion 50 on the inner bottom surface of the second water receiving tray 5, the first protrusion 40 and the second protrusion 50 can provide stable support for the bottom of the first heat exchanger 31 and the bottom of the second heat exchanger 32, respectively, playing a better auxiliary support role, improving the installation stability of the heat exchange components, and preventing shaking under airflow or after long-term use. By providing support with protrusions on the inner bottom surface of the water receiving tray, the protrusions can fit well with the bottom of the heat exchanger, reducing the likelihood of false contact, improving support reliability, and reducing the requirements for the machining precision of the protrusions. In addition, since the bottom surface of the heat exchanger is supported only by the protrusions, the bottom area of ​​the air-facing side of the heat exchanger can still be traversed by airflow, ensuring the heat exchange area, and the condensate produced by the heat exchanger can be smoothly discharged into the water receiving tray.

[0170] Because this type of air conditioner indoor unit with top and bottom air outlets places the water collection component in a suitable position and provides stable support for the heat exchange components, and allows the water collection component to reliably collect condensate, the air conditioning unit operates more reliably and can maintain stability even after long-term use.

[0171] 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: The housing (1) includes a top plate (11), a bottom plate (12), a front plate (13) and a rear plate (14). The top plate (11) is provided with a first air outlet (10) for air outlet in cooling mode. The bottom plate (12) is provided with a second air outlet (20) for air outlet in heating mode. The front plate (13) and the rear plate (14) are connected between the top plate (11) and the bottom plate (12) and are spaced apart along a first direction (x). A cross-flow fan (2) is disposed inside the housing (1) and extends along a second direction (y), the second direction (y) being perpendicular to the first direction (x); and A heat exchange assembly (3) is disposed between the top plate (11) and the cross-flow fan (2), and includes a first heat exchanger (31) and a second heat exchanger (32). The top ends of the first heat exchanger (31) and the second heat exchanger (32) are close to each other. The bottom end of the first heat exchanger (31) extends obliquely toward the front plate (13), and the bottom end of the second heat exchanger (32) extends obliquely toward the rear plate (14). The water receiving component includes a first water receiving tray (4) and a second water receiving tray (5). The first water receiving tray (4) is located below the bottom end of the first heat exchanger (31), and the inner bottom surface of the first water receiving tray (4) is provided with a first protrusion (40) for supporting the bottom of the first heat exchanger (31). The second water receiving tray (5) is located below the bottom end of the second heat exchanger (32), and the inner bottom surface of the second water receiving tray (5) is provided with a second protrusion (50) for supporting the bottom of the second heat exchanger (32).

2. The indoor unit of the air conditioner according to claim 1, characterized in that, Both the first protrusion (40) and the second protrusion (50) include a plurality of bosses (401) spaced apart along the second direction (y).

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The root width of the first protrusion (40) and the second protrusion (50) is greater than the top width.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, A gap is provided between each of the two sides of the first heat exchanger (31) and the two side walls of the first water receiving tray (4); and / or A gap is provided between the two sides of the second heat exchanger (32) and the two side walls of the second water receiving tray (5).

5. The air conditioning indoor unit according to any one of claims 1 to 4, characterized in that, The first water receiving tray (4) includes a first sidewall (42), which is disposed close to the front plate (13); The indoor unit of the air conditioner also includes a first air duct side plate (6), the bottom end of which is connected to the first side wall (42), and the top end of which extends upward to the area adjacent to the top plate (11) and the front plate (13), and the first air duct side plate (6) is connected to the front plate (13).

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The first air duct side plate (6) includes: Main body panel (61); A bent plate (62), one end of which is connected to the top of the main body plate (61), and the other end which is inclined toward and abuts against the front plate (13); and Two mounting plates (63) are respectively provided at both ends of the main body plate (61) along the second direction (y), and both are detachably connected to the front plate (13).

7. The air conditioning indoor unit according to any one of claims 1 to 4, characterized in that, The first water receiving tray (4) includes: The first bottom wall (41) is inclined, and the first end near the front plate (13) is higher than the second end away from the front plate (13); The first sidewall (42) is connected to the first end of the first bottom wall (41); and The second sidewall (43) is connected to the second end of the first bottom wall (41).

8. The air conditioning indoor unit according to any one of claims 1 to 4, characterized in that, It also includes a support component (7) connected to the inner surface of the rear plate (14), and the second water receiving tray (5) is supported on the top surface of the support component (7).

9. The indoor unit of the air conditioner according to claim 8, characterized in that, The second water receiving tray (5) includes a second bottom wall (51), and the supporting surfaces of the second bottom wall (51) and the supporting component (7) are both horizontally arranged.

10. The air conditioning indoor unit according to any one of claims 1 to 4, characterized in that, The second water receiving tray (5) includes a third sidewall (52), which is disposed near the rear plate (14); The indoor unit of the air conditioner also includes a second air duct side plate (6'), the bottom end of which is connected to the third side wall (52), and the top end of which extends upward to abut against the area adjacent to the top plate (11) and the rear plate (14), and the second air duct side plate (6') is connected to the rear plate (14).

11. The indoor unit of the air conditioner according to any one of claims 1 to 4, characterized in that, The first water receiving tray (4) includes a first bottom wall (41) and a second side wall (43). The second side wall (43) is connected to the second end of the first bottom wall (41) away from the front plate (13). The second side wall (43) is higher than the bottom of the first heat exchanger (31) and extends obliquely upward by a first preset distance; and / or The second water receiving tray (5) includes a second bottom wall (51) and a fourth side wall (53). The fourth side wall (53) is connected to the second end of the second bottom wall (51) away from the rear plate (14). The fourth side wall (53) is higher than the bottom of the second heat exchanger (32) and extends obliquely upward by a second preset distance.

12. The air conditioning indoor unit according to any one of claims 1 to 4, characterized in that, The first water receiving tray (4) and the second water receiving tray (5) extend along the second direction (y) and have a length not less than that of the heat exchange assembly (3). The water receiving component further includes: The third water receiving tray (8) is connected between the first ends of the first water receiving tray (4) and the second water receiving tray (5) along the second direction (y); and The fourth water receiving tray (9) is connected between the second ends of the first water receiving tray (4) and the second water receiving tray (5) along the second direction (y).

13. The indoor unit of the air conditioner according to claim 12, characterized in that, The second water receiving tray (5) has drain outlets (54) at both ends along the second direction (y) near the third side wall (52) of the rear plate (14).

14. The indoor unit of the air conditioner according to claim 13, characterized in that, The inner surfaces of the first water receiving tray (4) and the second water receiving tray (5) are higher than the sides in the middle region along the second direction (y).

15. The indoor unit of the air conditioner according to claim 13, characterized in that, The third water receiving tray (8) is connected to the first end of the first water receiving tray (4) at a higher end than the second end of the second water receiving tray (5), and the fourth water receiving tray (9) is connected to the first end of the first water receiving tray (4) at a higher end than the second end of the second water receiving tray (5).

16. The indoor unit of the air conditioner according to any one of claims 1 to 4, characterized in that, The cross-flow fan (2) includes: Crossflow fan blades (21); and The air duct assembly includes a volute (22) and a volute tongue (23) connected to each other. The volute (22) and the volute tongue (23) are arranged circumferentially spaced along the cross-flow fan blade (21) to form an air duct inlet (24) and an air duct outlet (25) on the circumferential sidewall of the air duct assembly. The air duct assembly is rotatable about the central axis of the cross-flow fan blade (21) so that the indoor unit of the air conditioner switches between the upper air outlet state in the cooling mode and the lower air outlet state in the heating mode.

17. An air conditioning unit, characterized in that, Includes the air conditioning indoor unit as described in any one of claims 1 to 16.

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