Indoor unit and air conditioner

Abstract

The present application relates to the technical field of air conditioners. Disclosed are an indoor unit and an air conditioner. The indoor unit comprises: an air channel housing having a side wall; a bottom tray arranged at the bottom of the air channel housing; and a splash-proof structure arranged at the end of the side wall close to the bottom tray, the splash-proof structure being used for receiving condensed water from the side wall and guiding same into the bottom tray.

Description

Indoor units and air conditioners

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202421632048.X, filed on July 10, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioning technology, and in particular to an indoor unit and an air conditioner. Background Technology

[0004] When the indoor unit of an air conditioner is cooling, condensation easily forms on the outer wall of the air duct due to the low temperature. As the condensation increases, it drips into the chassis below, splashing or dripping directly onto the floor, affecting the user experience. Currently, a common solution is to attach sponge to the outer wall of the air duct for insulation. However, this method not only increases labor and material costs in production, but the sponge itself also produces condensation that drips onto the floor, failing to solve the problem of condensation splashing. Summary of the Invention

[0005] The main purpose of this application is to provide an indoor unit and air conditioner designed to prevent condensate from splashing onto the casing of the indoor unit's air duct, thereby improving the user experience.

[0006] To achieve the above objectives, this application proposes an indoor unit comprising:

[0007] The air duct shell has side walls;

[0008] The chassis is located at the bottom of the air duct shell;

[0009] A splash-proof structure is provided on one end of the side wall near the chassis. The splash-proof structure is used to collect condensate on the side wall and guide it into the chassis.

[0010] In one embodiment, the splash-proof structure includes:

[0011] A receiving part is provided below the side wall and engages with the edge of the chassis;

[0012] The connecting part connects the air duct shell to the receiving part.

[0013] In one embodiment, the receiving portion is provided with a guide surface on the side facing the middle of the chassis, and the guide surface bends and extends toward the middle of the chassis.

[0014] In one embodiment, a flow guide is provided at the bottom of the side wall, the flow guide is opposite to the splash-proof structure, and the indoor unit also includes a flow diversion structure, which is provided on the side wall and is used to guide the condensate to the flow guide.

[0015] In one embodiment, the duct shell is configured as the outer shell of a centrifugal duct, with an air outlet at the top, and the sidewall has a first region near the center of the duct shell and a second region near the air outlet. The airflow guiding structure includes:

[0016] A first set of guide ribs is provided in the first region to guide the condensate in the first region to the guide port;

[0017] A second set of guide ribs is provided in the second region to guide the condensate in the second region to the guide port.

[0018] In one embodiment, the first drainage rib assembly includes:

[0019] The first drainage rib is located in the first region and extends around the center of the air duct shell. The first drainage rib has a first drainage port on the side near the guide port.

[0020] The second drainage rib is disposed at the first drainage port and extends toward the drainage port.

[0021] In one embodiment, multiple first drainage ribs are provided, and the multiple first drainage ribs are concentric and spaced apart; and / or, the end of the first drainage rib near the first drainage port is connected to the second drainage rib.

[0022] In one embodiment, the second drainage rib assembly includes:

[0023] The third drainage rib is located at the edge of the second area and is inclined towards the ground.

[0024] The fourth drainage rib is located below the third drainage rib and extends toward the drainage port.

[0025] In one embodiment, the second region includes a first sub-region located to the side of the first region and a second sub-region located above the first region, and the third drainage rib includes:

[0026] The first sub-rib is located in the first sub-region. The first sub-rib extends obliquely from the edge of the first sub-region away from the first region toward the guide port. The fourth guide rib is located below the first sub-rib.

[0027] The second sub-rib is located in the second sub-region and extends obliquely from the edge of the second sub-region near the first region toward the flow guide.

[0028] In one embodiment, the first sub-ribs are arranged in parallel and spaced apart in the vertical direction; and / or, the second sub-ribs are arranged in parallel and spaced apart in the horizontal direction.

[0029] In one embodiment, the sidewall of the air duct shell is provided with reinforcing ribs, the reinforcing ribs including a first reinforcing rib having a first protrusion height and a second reinforcing rib having a second protrusion height, wherein the first protrusion height is greater than the second protrusion height;

[0030] The first reinforcing rib forms the first drainage rib group and the second drainage rib group.

[0031] This application also proposes an air conditioner including the indoor unit described above.

[0032] In one embodiment, the air conditioner further includes an outdoor unit, and the indoor unit is connected to the outdoor unit via a flexible refrigerant pipe, wherein the flexible refrigerant pipe is pre-charged with refrigerant; and / or,

[0033] The compressor of the air conditioner is located in the indoor unit.

[0034] Compared with the prior art, in the technical solution of this application, the indoor unit includes a duct shell, an air duct for airflow is provided inside the duct shell, the duct shell has a side wall, and a chassis is provided at the bottom of the duct shell. The chassis can collect condensate on the duct shell. In addition, a splash-proof structure is provided on the side wall near the chassis. The splash-proof structure can collect condensate dripping from the side wall and guide the condensate into the chassis. In this solution, by setting the splash-proof structure to guide the condensate on the side wall of the duct shell, it can prevent the condensate on the side wall from dripping onto the outside of the chassis, and also prevent the condensate dripping onto the chassis and then splashing onto the outside of the chassis. This solves the technical problem that condensate inside the indoor unit easily drips onto the ground and improves the user experience. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 is a structural schematic diagram of the indoor unit provided in this application;

[0037] Figure 2 is a magnified view of part A in Figure 1;

[0038] Figure 3 is a magnified view of part B in Figure 1;

[0039] Figure 4 is a cross-sectional structural diagram of the indoor unit provided in this application;

[0040] Figure 5 is a magnified view of part C in Figure 4.

[0041] Explanation of icon numbers:

[0042] 100. Air duct shell; 110. Air guide port; 200. Chassis; 300. Splash-proof structure; 310. Receiving part; 311. Air guide surface; 320. Connecting part; 400. Air diversion structure; 410. First air diversion rib group; 411. First air diversion rib; 412. Second air diversion rib; 420. Second air diversion rib group; 421. Third air diversion rib; 4211. First sub-rib; 4212. Second sub-rib; 422. Fourth air diversion rib.

[0043] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Embodiments of the present invention

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0045] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0047] In current air conditioning applications, condensation easily forms on the surfaces of air ducts due to low temperatures. This condensation drips and splashes, negatively impacting the user experience. A common solution is to add insulating foam to the duct surface to prevent condensation from dripping onto the ground, thus maintaining a dry and safe environment. However, this method not only increases production costs but also fails to completely eliminate condensation.

[0048] To solve the above-mentioned technical problems, this technical solution proposes an indoor unit, including:

[0049] The air duct shell 100 has side walls;

[0050] The chassis 200 is located at the bottom of the air duct housing 100;

[0051] The splash-proof structure 300 is located on the side wall near the end of the chassis 200. The splash-proof structure 300 is used to collect condensate on the side wall and guide it into the chassis 200.

[0052] Compared with the prior art, in the technical solution of this application, the indoor unit includes a duct shell 100, an air duct for airflow is provided inside the duct shell 100, the duct shell has a side wall, and a chassis 200 is provided at the bottom of the duct shell 100. The chassis 200 can collect condensate on the duct shell 100. In addition, a splash-proof structure 300 is provided on the side wall near the chassis 200. The splash-proof structure 300 can collect condensate dripping from the side wall and guide the condensate into the chassis 200. In this solution, by setting the splash-proof structure 300 to guide the condensate on the side wall of the duct shell 100, the condensate on the side wall can be prevented from dripping onto the outside of the chassis 200, and the condensate dripping onto the chassis 200 and then splashing onto the outside of the chassis 200 can be prevented. This solves the technical problem that condensate inside the indoor unit easily drips onto the ground and improves the user experience.

[0053] As shown in Figures 1 to 5, in one embodiment of this application, the indoor unit includes a duct housing 100, which has a cross-flow or centrifugal air duct inside and sidewalls. Additionally, a chassis 200 structure is provided at the bottom of the duct housing 100, forming part of the air conditioner casing. The chassis 200 is located at the bottom of the indoor unit and supported on the ground. Condensate from the duct housing and components such as the evaporator of the indoor unit can drip onto the chassis 200 and be collected there. To prevent condensate from dripping... To prevent splashing, a splash-proof structure 300 is also provided on the side wall of the air duct housing 100. The splash-proof structure 300 is located at one end of the side wall near the point. Under the action of gravity, the condensate on the side wall can flow to the splash-proof structure 300 and be guided into the chassis 200. This can prevent the condensate on the side wall from dripping onto the outside of the chassis 200, and also prevent the condensate from dripping directly onto the chassis 200 and splashing. This prevents the condensate from coming into contact with the electrical equipment of the indoor unit and causing safety hazards, and also prevents the ground around the indoor unit from getting wet, which would affect the user experience.

[0054] As shown in Figure 2, in one embodiment of this application, the splash-proof structure 300 includes:

[0055] The receiving part 310 is located below the side wall and engages with the edge of the chassis 200;

[0056] The connecting part 320 connects the air duct shell 100 and the receiving part 310.

[0057] The receiving part 310 is a plate-like structure. It is located below the side wall and engages with the edge of the chassis 200. This effectively increases the height of the side wall of the chassis 200, preventing condensate from splashing out. The connecting part 320 can be integrally formed with the receiving part 310 and can be fixed to the bottom of the duct housing 100 by means of screws or other methods. Condensate dripping from the side wall will be guided into the chassis 200 below by the receiving part 310, thus preventing condensate from dripping onto the outside of the chassis 200. Alternatively, in another embodiment, the connecting body and the receiving part 310 can be integrally formed with the duct housing 100. This ensures that the position between the splash-proof structure 300 and the duct housing 100 remains relatively stable before and after assembly, guaranteeing that the condensate on the side wall is ultimately collected by the chassis 200.

[0058] As shown in Figure 5, in one embodiment of this application, a guide surface 311 is provided on the side of the receiving part 310 facing the center of the chassis 200. The guide surface 311 bends and extends towards the center of the chassis 200. The guide surface 311 is provided on the side of the receiving part 310 facing the center of the chassis 200. One end of the guide surface 311 can extend to the upper edge of the receiving part 310, and the other end bends and extends towards the central area of ​​the chassis 200. In this way, after the condensate enters the inlet, it can be received by the guide surface 311 and flow along the top surface of the guide surface 311 under the wall adhesion effect, and finally flow into the chassis 200. This can reduce the impact of the condensate dripping into the chassis 200, thereby reducing the splashing of condensate in the chassis 200 and reducing the possibility of condensate coming into contact with other components around the chassis 200, thereby improving the safety of the indoor unit.

[0059] As shown in Figures 1 and 2, in one embodiment of this application, a guide port 110 is provided at the bottom of the side wall. The guide port 110 is positioned opposite to the anti-splash structure 300. The indoor unit also includes a drainage structure 400, which is located on the side wall and is used to guide condensate water to the guide port 110. The flow guide 110 is located at the lowest point of the side wall. The flow guide 110 can be a notch formed by a recess in the side wall or an opening surrounded by two parallel and spaced ribs on the side wall. In addition, a flow guiding structure 400 is provided on the side wall. The flow guiding structure 400 can be a plurality of flow guiding ribs provided on the side wall. The flow guiding structure 400 can cover the entire side wall and extend to the flow guide 110 at the bottom. The condensate on the side wall can flow to the flow guide 110 under the guidance of the flow guiding structure 400. In addition, the splash guard 300 can be located directly below the flow guide 110. After the condensate flows out of the flow guide 110, it can be collected by the splash guard 300 and then flow into the chassis 200 under the flow guiding action of the splash guard 300. In this solution, by setting the guide port 110 and the guide structure 400 to guide the flow of the guide port 110, the condensate on the side wall can be collected and discharged in a concentrated manner, which prevents the condensate from flowing turbulently on the side wall and ensures that the condensate on the side wall can be discharged in a timely manner.

[0060] As shown in Figure 1, in one embodiment of this application, the duct shell 100 is configured as the outer shell of a centrifugal duct. An air outlet is provided at the top of the duct shell 100, and the sidewalls have a first region near the center of the duct shell 100 and a second region near the air outlet. The airflow guiding structure 400 includes:

[0061] The first drainage rib group 410 is provided in the first area to guide the condensate in the first area to the drainage port 110;

[0062] The second drainage rib group 420 is provided in the second area to guide the condensate in the second area to the drainage port 110.

[0063] In one embodiment, the duct shell 100 is the outer shell of a centrifugal duct. The duct shell 100 is mounted on the chassis 200 by a bracket. An air outlet is provided at the top of the duct shell 100. Additionally, the side wall is the axial side wall of the duct shell 100. The center of the duct shell 100 is the axis where the fan is mounted. The area near the center of the duct shell 100 is a first region. The area surrounding the side and above the first duct on the side wall is a second region. This second region is near the air outlet. The airflow guiding structure 400 includes a first airflow guiding rib group 410 and a second airflow guiding rib group 420. A flow guide group 410 is disposed in the first area, and a second flow guide group 420 is disposed in the second area. The first flow guide group 410 and the second flow guide group 420 can be flow channels disposed on the side wall. The first flow guide group 410 can guide the condensate in the first area to the flow guide port 110, and the second flow guide group 420 can guide the condensate in the second area to the flow guide port 110. The condensate is then guided to the flow guide port 110 through the first flow guide group 410. Through the cooperation of the first flow guide group 410 and the second flow guide group 420, the condensate on the entire side wall can be diverted, so that the condensate flows into the chassis 200 more quickly.

[0064] As shown in Figure 2, in one embodiment of this application, the first drainage rib group 410 includes:

[0065] The first drainage rib 411 is located in the first region and extends around the center of the air duct shell 100. The first drainage rib 411 has a first drainage port on the side near the guide port 110.

[0066] The second drainage rib 412 is located at the first drainage port and extends toward the drainage port 110.

[0067] In one embodiment, the first guide rib 411 may be a rib extending around the center of the air duct shell 100. The lowest point of the first guide rib 411, i.e., the side near the guide port 110, is provided with a first guide port. In this way, the condensate in the first area flows under the action of gravity. When the condensate comes into contact with the first guide rib 411, the condensate will be blocked by the first guide rib 411 and flow along the extension direction of the first guide rib 411, and finally drip from the first guide port. In addition, a vertically extending second guide rib 412 is provided at the first guide port. The second guide rib 412 extends to the guide port 110. After the condensate drips, it will flow into the guide port 110 under the continued guidance of the second guide rib 412. Through the cooperation of the first guide rib 411 and the second guide rib 412, the condensate in the first area can flow along a fixed path, ensuring that the condensate in the first area can flow smoothly into the guide port 110. In addition, in this design, the first drainage rib 411 and the second drainage rib 412 can also serve as reinforcing ribs, providing support for the air duct shell 100 and improving the overall strength of the air duct shell 100.

[0068] As shown in Figure 2, in one embodiment of this application, multiple first drainage ribs 411 are provided, and the multiple first drainage ribs 411 are concentric and spaced apart. In this solution, multiple first drainage ribs 411 can be provided, and the multiple first drainage ribs 411 are concentric and spaced apart. In addition, a second drainage rib 412 can be provided at the lowest position of each first drainage rib 411. In this way, each first drainage rib 411 can guide the condensate in its area, which is equivalent to diverting the condensate in the first area, so that the first drainage rib group 410 can collect and discharge condensate more quickly, and at the same time, it is also beneficial to further improve the structural strength of the air duct shell 100. In another embodiment, the first drainage rib 411 and the second drainage rib 412 can be an integral structure, so that the condensate can be guided more smoothly from the first drainage rib 411 to the second drainage rib 412, and the condensate can be discharged more quickly.

[0069] As shown in Figure 3, in one embodiment of this application, the second drainage rib assembly 420 includes:

[0070] The third drainage rib 421 is located at the edge of the second area and is inclined towards the ground;

[0071] The fourth drainage rib 422 is located below the third drainage rib 421 and extends toward the drainage port 110.

[0072] In one embodiment, the third drainage rib 421 is a rib structure protruding from the second region. The third drainage rib 421 extends obliquely from the horizontal edge of the second region toward the ground. A fourth drainage rib 422 is provided below the third drainage rib 421 and extends to the guide port 110. When the condensate in the second region drips onto the third drainage rib 421, it will flow down along the third drainage rib 421 due to the wall adhesion effect. Then, the condensate drips onto the fourth drainage rib 422 below and continues to flow into the guide port 110 under the guidance of the fourth drainage rib 422. The cooperation of the third drainage rib 421 and the fourth drainage rib 422 allows the condensate in the second region to flow along a fixed path, preventing turbulent flow of the condensate in the second region and ensuring that the condensate in the second region can flow smoothly into the guide port 110. In addition, in this design, the third drainage rib 421 and the fourth drainage rib 422 can also serve as reinforcing ribs, providing support for the air duct shell 100 and improving the overall strength of the air duct shell 100.

[0073] As shown in Figure 3, in one embodiment of this application, the second region includes a first sub-region located to the side of the first region and a second sub-region located above the first region, and the third drainage rib 421 includes:

[0074] The first sub-rib 4211 is located in the first sub-region. The first sub-rib 4211 extends obliquely from the edge of the first sub-region away from the first region to the guide port 110. The fourth guide rib 422 is located below the first sub-rib 4211.

[0075] The second sub-rib 4212 is located in the second sub-region and extends obliquely from the edge of the second sub-region near the first region toward the first sub-rib 4211.

[0076] In one embodiment, the condensate near the air outlet first flows under the guidance of the second sub-rib 4212, then drips onto the first sub-rib 4211 below, and continues to flow into the guide port 110 under the guidance of the first sub-rib 4211. Finally, it flows into the guide port 110 under the guidance of the fourth guide rib 422. When the condensate drips from the second sub-rib 4212 onto the first sub-rib 4211, the flow direction of the condensate will change, which can reduce the flow speed of the condensate, thereby reducing the speed at which the condensate finally drips onto the chassis 200, further preventing and reducing splashing, reducing the possibility of condensate coming into contact with electrical components around the chassis 200, thereby improving the safety of the indoor unit.

[0077] As shown in Figure 3, in one embodiment of this application, multiple first sub-ribs 4211 are arranged parallel to each other vertically and at intervals. This can divert the condensate in the area where the first sub-ribs 4211 are located, so that the condensate in the first sub-area can be collected and discharged more quickly. Similarly, multiple second sub-ribs 4212 are arranged parallel to each other horizontally and at intervals. This can divert the condensate in the area where the second sub-ribs 4212 are located, so that the condensate in the second sub-area can be collected and discharged more quickly.

[0078] In one embodiment of this application, the sidewall of the air duct shell 100 is provided with reinforcing ribs, the reinforcing ribs include a first reinforcing rib having a first protrusion height and a second reinforcing rib having a second protrusion height, the first protrusion height being greater than the second protrusion height;

[0079] The first reinforcing rib forms the first drainage rib group 410 and the second drainage rib group 420.

[0080] In one embodiment, to improve the structural strength of the duct shell 100, reinforcing ribs can be provided on the sidewalls of the duct shell 100. These reinforcing ribs can be configured as concentric, spaced ribs extending around the duct shell 100 in a first region, and as staggered ribs in a second region. The reinforcing ribs can be divided into first and second reinforcing ribs. The first reinforcing rib has a first protrusion height, and the second reinforcing rib has a second protrusion height. The first protrusion height can be greater than the second protrusion height. The aforementioned first drainage rib group 410 and second drainage rib group 420 can be formed by the first reinforcing rib. Since the height of the first reinforcing rib is higher than the second reinforcing rib, condensate can flow past the second reinforcing rib without passing the first reinforcing rib. Therefore, the condensate can flow into the lower chassis 200 under the guidance of the first reinforcing rib. In this way, while improving the structural strength of the duct shell 100, the drainage of condensate from the sidewalls is also achieved, which is beneficial for facilitating the design of the duct shell 100 and simplifying its structure, thus reducing costs.

[0081] This application also proposes an air conditioner, including the above-mentioned indoor unit. The specific structure of the indoor unit is as described in the above embodiments. Since this air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0082] In one embodiment, the air conditioner includes an indoor unit and an outdoor unit, which are connected by a flexible refrigerant pipe pre-filled with refrigerant. This pre-filling at the factory allows for easy installation; only the indoor and outdoor units need to be fixed, eliminating the need for refrigerant pipe assembly and refrigerant charging. This reduces installation difficulty and facilitates individual user installation. Furthermore, the flexible refrigerant pipe allows for relative displacement between the indoor and outdoor units, ensuring pipe sealing and preventing refrigerant leakage. In another embodiment, the compressor can be mounted on the indoor unit to reduce the weight of the outdoor unit, further simplifying installation. Additionally, the compressor on the indoor unit can be equipped with a noise reduction structure to lower operating noise and improve user experience.

[0083] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. An indoor unit, wherein, The indoor unit includes: The air duct shell has side walls; The chassis is located at the bottom of the air duct shell; A splash-proof structure is provided on one end of the side wall near the chassis. The splash-proof structure is used to collect condensate on the side wall and guide it into the chassis.

2. The indoor unit as described in claim 1, wherein, The splash-proof structure includes: A receiving part is provided below the side wall and engages with the edge of the chassis; The connecting part connects the air duct shell to the receiving part.

3. The indoor unit as described in claim 2, wherein, The receiving part is provided with a guide surface on the side facing the middle of the chassis, and the guide surface bends and extends towards the middle of the chassis.

4. The indoor unit as described in claim 1, wherein, A flow guide port is provided at the bottom of the side wall, and the flow guide port is opposite to the splash-proof structure. The indoor unit also includes a flow diversion structure, which is located on the side wall and is used to guide the condensate to the flow guide port.

5. The indoor unit as described in claim 4, wherein, The duct shell is configured as the outer shell of a centrifugal duct, with an air outlet at the top. The sidewall has a first region near the center of the duct shell and a second region near the air outlet. The airflow guiding structure includes: A first set of guide ribs is provided in the first region to guide the condensate in the first region to the guide port; A second set of guide ribs is provided in the second region to guide the condensate in the second region to the guide port.

6. The indoor unit as described in claim 5, wherein, The first drainage rib group includes: The first drainage rib is located in the first region and extends around the center of the air duct shell. The first drainage rib has a first drainage port on the side near the guide port. The second drainage rib is disposed at the first drainage port and extends toward the drainage port.

7. The indoor unit as described in claim 6, wherein, Multiple first drainage ribs are provided, and the multiple first drainage ribs are concentric and spaced apart; and / or, the end of the first drainage rib near the first drainage port is connected to the second drainage rib.

8. The indoor unit as described in claim 6, wherein, The second drainage rib group includes: The third drainage rib is located at the edge of the second area and is inclined towards the ground. The fourth drainage rib is located below the third drainage rib and extends toward the drainage port.

9. The indoor unit as described in claim 8, wherein, The second region includes a first sub-region located to the side of the first region and a second sub-region located above the first region, and the third drainage rib includes: The first sub-rib is located in the first sub-region. The first sub-rib extends obliquely from the edge of the first sub-region away from the first region toward the guide port. The fourth guide rib is located below the first sub-rib. The second sub-rib is located in the second sub-region and extends obliquely from the edge of the second sub-region near the first region toward the first sub-rib.

10. The indoor unit as described in claim 9, wherein, The first sub-ribs are arranged in parallel and spaced apart in the vertical direction; and / or, the second sub-ribs are arranged in parallel and spaced apart in the horizontal direction.

11. The indoor unit as described in claim 5, wherein, The sidewall of the air duct shell is provided with reinforcing ribs, the reinforcing ribs include a first reinforcing rib having a first protrusion height and a second reinforcing rib having a second protrusion height, the first protrusion height being greater than the second protrusion height; The first reinforcing rib forms the first drainage rib group and the second drainage rib group.

12. An air conditioner, wherein, The air conditioner includes the indoor unit as described in any one of claims 1 to 11.

13. The air conditioner as claimed in claim 12, wherein, The air conditioner also includes an outdoor unit, and the indoor unit is connected to the outdoor unit via a flexible refrigerant pipe, and the flexible refrigerant pipe is pre-charged with refrigerant. And / or, The compressor of the air conditioner is located in the indoor unit.

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