Indoor unit and air conditioner

Abstract

The utility model discloses an indoor unit and an air conditioner, and relates to the technical field of air conditioners, and the indoor unit comprises an air duct shell, an air inlet and an air outlet, the chassis is arranged at the bottom of the air duct shell; the splash-proof structure is arranged at the end, close to the base plate, of the side wall, and the splash-proof structure is used for receiving condensate water on the side wall and guiding the condensate water into the base plate; according to the technical scheme provided by the utility model, condensate water on the air duct shell of the indoor unit is prevented from splashing.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly relates to an indoor unit and an air conditioner. Background Art

[0002] When the indoor unit of an air conditioner is cooling, the outer wall of the air duct is prone to generate condensed water due to the low temperature. As the condensed water increases, the condensed water will drip into the lower chassis and splash, or directly drip onto the ground, which will affect the user experience. The currently common solution is to attach sponge to the outer wall of the air duct for heat preservation. This method not only increases the labor cost and material cost of production, but also the sponge will generate condensed water dripping onto the ground, and the problem of condensed water splashing cannot be solved. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose an indoor unit and an air conditioner, aiming to prevent the condensed water on the outer shell of the indoor unit air duct from splashing, so as to improve the user experience.

[0004] To achieve the above object, an indoor unit proposed by the utility model includes:

[0005] An air duct shell having side walls;

[0006] A chassis provided at the bottom of the air duct shell;

[0007] A splash-proof structure provided at one end of the side wall close to the chassis, and the splash-proof structure is used to receive the condensed water on the side wall and drain it into the chassis.

[0008] In an embodiment, the splash-proof structure includes:

[0009] A receiving portion provided below the side wall and joined to the edge of the chassis;

[0010] A connecting portion connecting the air duct shell and the receiving portion.

[0011] In an embodiment, a diversion surface is provided on one side of the receiving portion facing the middle of the chassis, and the diversion surface bends and extends towards the middle of the chassis.

[0012] In an embodiment, a diversion port is provided at the bottom of the side wall, and the diversion port is opposite to the position of the splash-proof structure. The indoor unit further includes a drainage structure provided on the side wall, and the drainage structure is used to divert the condensed water to the diversion port.

[0013] In an embodiment, the air duct shell is configured as the outer shell of a centrifugal air duct, an air outlet is provided at the top of the air duct shell, and the side wall has a first area close to the center of the air duct shell and a second area close to the air outlet. The drainage structure includes:

[0014] The first drainage rib group is arranged in the first area to guide the condensed water in the first area to the drainage port;

[0015] The second drainage rib group is arranged in the second area to guide the condensed water in the second area to the drainage port.

[0016] In one embodiment, the first drainage rib group includes:

[0017] The first drainage rib is arranged in the first area and extends around the center of the air duct housing. A first drainage opening is formed on one side of the first drainage rib close to the drainage port;

[0018] The second drainage rib is arranged at the first drainage opening and extends towards the drainage port.

[0019] In one embodiment, a plurality of the first drainage ribs are provided, and the plurality of first drainage ribs are concentric and arranged at intervals; and / or, one end of the first drainage rib close to the first drainage opening is connected to the second drainage rib.

[0020] In one embodiment, the second drainage rib group includes:

[0021] The third drainage rib is arranged at the edge of the second area and is inclined towards the ground;

[0022] The fourth drainage rib is arranged below the third drainage rib, and the fourth drainage rib extends towards the drainage port.

[0023] In one embodiment, the second area includes a first sub-area located on the side of the first area and a second sub-area located above the first area. The third drainage rib includes:

[0024] The first sub-rib is arranged in the first sub-area. The first sub-rib extends obliquely towards the drainage port from the edge of the first sub-area far from the first area. The fourth drainage rib is arranged below the first sub-rib;

[0025] The second sub-rib is arranged in the second sub-area. The second sub-rib extends obliquely towards the drainage port from the edge of the second sub-area close to the first area.

[0026] In one embodiment, a plurality of the first sub-ribs are arranged in parallel and at intervals in the vertical direction; and / or, a plurality of the second sub-ribs are arranged in parallel and at intervals in the horizontal direction.

[0027] In one embodiment, reinforcing ribs are arranged on the side wall of the air duct housing. The reinforcing ribs include a first reinforcing rib with a first protruding height and a second reinforcing rib with a second protruding height, and the first protruding height is greater than the second protruding height;

[0028] The first reinforcing rib forms the first drainage rib group and the second drainage rib group.

[0029] The present utility model further provides an air conditioner, which includes the indoor unit described above.

[0030] In an embodiment, the air conditioner further includes an outdoor unit. The indoor unit is connected to the outdoor unit through a flexible refrigerant pipe, and the flexible refrigerant pipe is pre-filled with refrigerant; and / or,

[0031] The compressor of the air conditioner is arranged in the indoor unit.

[0032] Compared with the prior art, in the technical solution of the present utility model, the indoor unit includes an air duct housing. An air duct for air flow is arranged in the air duct housing. The air duct housing has a side wall. A chassis is arranged at the bottom of the air duct housing. The chassis can receive the condensed water on the air duct housing. In addition, a splash-proof structure is arranged at one end of the side wall close to the chassis. The splash-proof structure can receive the condensed water dripping from the side wall and guide the condensed water into the chassis; in this solution, by arranging the splash-proof structure to drain the condensed water on the side wall of the air duct housing, it is possible to prevent the condensed water on the side wall from dripping outside the chassis, and it is also possible to prevent the condensed water from splashing outside the chassis after dripping onto the chassis, solving the technical problem that the condensed water in the indoor unit is likely to drip and splash onto the ground, and improving the user experience. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0034] Figure 1 It is a schematic structural diagram of the indoor unit provided by the present utility model;

[0035] Figure 2 It is Figure 1 a partial enlarged view of A in

[0036] Figure 3 It is Figure 1 a partial enlarged view of B in

[0037] Figure 4 It is a schematic cross-sectional structural diagram of the indoor unit provided by the present utility model;

[0038] Figure 5 It is Figure 4 a partial enlarged view of C in

[0039] Explanation of the reference numerals in the drawings:

[0040] 100, air duct housing; 110, diversion opening; 200, chassis; 300, splash-proof structure; 310, receiving part; 311, diversion surface; 320, connecting part; 400, drainage structure; 410, first drainage rib group; 411, first drainage rib; 412, second drainage rib; 420, second drainage rib group; 421, third drainage rib; 4211, first sub-rib; 4212, second sub-rib; 422, fourth drainage rib.

[0041] The realization, functional features and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0043] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] In the application scenario of current air-conditioning refrigeration technology, the air duct inside the air conditioner is prone to form condensed water on its surface due to the low temperature, and the generated condensed water is likely to splash after dripping, affecting the user experience. To solve this problem, the common practice is to attach thermal insulation sponge material to the surface of the air duct, aiming to prevent the condensed water droplets from dripping to the ground, thereby keeping the use environment dry and safe. However, this method not only increases the production cost but also makes it difficult to completely eliminate the generation of condensed water.

[0046] To solve the above technical problems, this technical solution proposes an indoor unit, including:

[0047] An air duct housing 100 having side walls;

[0048] A chassis 200 provided at the bottom of the air duct housing 100;

[0049] A splash-proof structure 300 provided at one end of the side wall close to the chassis 200, and the splash-proof structure 300 is used to receive the condensed water on the side wall and drain it into the chassis 200.

[0050] Compared with the prior art, in the technical solution of this utility model, the indoor unit includes an air duct housing 100. An air duct for air flow is provided inside the air duct housing 100. The air duct housing has side walls. A chassis 200 is provided at the bottom of the air duct housing 100, and the chassis 200 can receive the condensed water on the air duct housing 100. In addition, a splash-proof structure 300 is provided at one end of the side wall close to the chassis 200, and the splash-proof structure 300 can receive the condensed water dripping from the side wall and divert the condensed water into the chassis 200. In this solution, by providing the splash-proof structure 300 to drain the condensed water on the side wall of the air duct housing 100, it is possible to prevent the condensed water on the side wall from dripping outside the chassis 200, and it is also possible to prevent the condensed water from splashing outside the chassis 200 after dripping onto the chassis 200, solving the technical problem that the condensed water inside the indoor unit is likely to drip and splash onto the ground and improving the user experience.

[0051] Such as Figures 1 to 5, in an embodiment of the present utility model, the indoor unit includes an air duct housing 100. A cross-flow air duct or a centrifugal air duct is arranged inside the air duct housing 100, and the air duct housing 100 has side walls. In addition, a chassis 200 structure is arranged at the bottom of the air duct housing 100. The chassis 200 forms a part of the air conditioner housing. The chassis 200 is arranged at the bottom of the indoor unit and supported on the ground. Condensate water on components such as the air duct housing and the evaporator of the indoor unit can drip onto the chassis 200 and be collected by the chassis 200. In order to prevent the splashing of the condensate water after dripping, a splash-proof structure 300 is further arranged on the side wall of the air duct housing 100. The splash-proof structure 300 is arranged at one end of the side wall close to a point. The condensate water on the side wall can flow to the splash-proof structure 300 under the action of gravity and be diverted by the splash-proof structure 300 into the chassis 200. In this way, it can prevent the condensate water on the side wall from dripping outside the chassis 200, and also prevent the condensate water from directly dripping onto the chassis 200 and splashing, preventing potential safety hazards caused by the contact between the condensate water and the electrical equipment of the indoor unit, and also preventing the ground around the indoor unit from getting wet and affecting the user experience.

[0052] As Figure 2 , in an embodiment of the present utility model, the splash-proof structure 300 includes:

[0053] A receiving part 310, arranged below the side wall and joined to the edge of the chassis 200;

[0054] A connecting part 320, connecting the air duct housing 100 and the receiving part 310.

[0055] The receiving part 310 is a plate-like structure. The receiving part 310 is arranged below the side wall and the receiving part 310 is joined to the edge of the chassis 200. In this way, it is equivalent to increasing the height of the side wall of the chassis 200, thereby preventing the condensate water from splashing out of the chassis 200. The connecting part 320 can be integrally arranged with the receiving part 310 and can be fixed to the bottom of the air duct housing 100 by means of screwing or the like. After the condensate water on the side wall drips, it will enter the lower chassis 200 under the guidance of the receiving part 310. Such a setting can prevent the condensate water on the side wall from dripping outside the chassis 200. In addition, in another embodiment, the connecting body and the receiving part 310 can be integrally formed with the air duct housing 100. In this way, it can ensure that the position between the splash-proof structure 300 and the air duct housing 100 can remain relatively stable before and after the assembly of the indoor unit, and ensure that the condensate water on the side wall can finally be received by the chassis 200.

[0056] As Figure 5, in an embodiment of the present utility model, a diversion surface 311 is provided on one side of the receiving portion 310 facing the middle of the chassis 200, and the diversion surface 311 bends and extends towards the middle of the chassis 200. The diversion surface 311 is provided on the side of the receiving portion 310 facing the center of the chassis 200. One end of the diversion surface 311 can extend to the upper edge of the receiving portion 310, and the other end bends and extends towards the central region of the chassis 200. In this way, after the condensed water enters the inlet, it can be received by the diversion surface 311 and flow along the top surface of the diversion surface 311 under the wall attachment effect, and finally flow into the chassis 200. In this way, the impact of the condensed water dripping into the chassis 200 can be reduced, thereby reducing the splashing of the condensed water in the chassis 200 and reducing the possibility of the condensed water contacting other components around the chassis 200, thus improving the safety of using the indoor unit.

[0057] As Figure 1 and Figure 2 , in an embodiment of the present utility model, a diversion port 110 is provided at the bottom of the side wall. The diversion port 110 is opposite to the splash-proof structure 300 in position. The indoor unit further includes a diversion structure 400 provided on the side wall. The diversion structure 400 is used to divert the condensed water to the diversion port 110. The diversion port 110 is provided at the lowest position of the side wall. The diversion port 110 can be a notch formed by a depression in the side wall or an opening surrounded by two parallel and spaced ribs on the side wall. In addition, a diversion structure 400 is also provided on the side wall. The diversion structure 400 can be a plurality of diversion rib plates provided on the side wall. The diversion structure 400 can cover the entire side wall and extend to the diversion port 110 at the bottom. The condensed water on the side wall can flow to the diversion port 110 under the guidance of the diversion structure 400. In addition, the splash-proof structure 300 can be provided directly below the diversion port 110. The condensed water flowing out of the diversion port 110 can be received by the splash-proof structure 300 and then flow into the chassis 200 under the diversion effect of the splash-proof structure 300. In this solution, by providing the diversion port 110 and the diversion structure 400 that diverts to the diversion port 110, the condensed water on the side wall can be collected and discharged centrally, preventing the condensed water from flowing randomly on the side wall and ensuring that the condensed water on the side wall can be discharged in time.

[0058] As Figure 1 , in an embodiment of the present utility model, the air duct housing 100 is configured as the housing of a centrifugal air duct. An air outlet is provided at the top of the air duct housing 100. The side wall has a first region close to the center of the air duct housing 100 and a second region close to the air outlet. The diversion structure 400 includes:

[0059] A first diversion rib group 410 provided in the first region to divert the condensed water in the first region to the diversion port 110;

[0060] A second diversion rib group 420 provided in the second region to divert the condensed water in the second region to the diversion port 110.

[0061] In this embodiment, the air duct housing 100 is the housing mechanism of a centrifugal air duct. The air duct housing 100 is installed on the chassis 200 through a bracket. An air outlet is provided at the top of the air duct housing 100. In addition, the side wall is the side wall on one side of the air duct housing 100 in the axial direction. The center of the air duct housing 100 is the axial position where a fan is installed on the air duct housing 100. The area close to the center of the air duct housing 100 is the first area. The area on the side and above the first air duct that is circumferentially arranged on the side wall is the second area. This second area is close to the air outlet. The drainage structure 400 includes a first drainage rib group 410 and a second drainage rib group 420. The first drainage rib group 410 is arranged in the first area, and the second drainage rib group 420 is arranged in the second area. The first drainage rib group 410 and the second drainage rib group 420 can be drainage grooves arranged on the side wall. The first drainage rib group 410 can divert the condensed water in the first area to the drainage port 110. The second drainage rib group 420 can divert the condensed water in the second area to the drainage port 110 and drain it to the drainage port 110 through the first drainage rib group 410. Through the cooperation of the first drainage rib group 410 and the second drainage rib group 420, the diversion of the condensed water on the entire side wall can be realized, so that the condensed water can flow into the chassis 200 faster.

[0062] Such as Figure 2 , in an embodiment of the present utility model, the first drainage rib group 410 includes:

[0063] The first drainage rib 411 is arranged in the first area and extends around the center of the air duct housing 100. A first drainage opening is provided on the side of the first drainage rib 411 close to the drainage port 110;

[0064] The second drainage rib 412 is arranged at the first drainage opening and extends towards the drainage port 110.

[0065] In this embodiment, the first drainage rib 411 may be a rib plate extending around the center of the air duct housing 100. A first drainage opening is provided on the lowest side of the first drainage rib 411, that is, the side close to the diversion opening 110. Thus, the condensed water in the first area flows under the action of gravity. When the condensed water contacts the first drainage rib 411, the condensed water will be blocked by the first drainage rib 411 and flow along the extension direction of the first drainage rib 411, and finally drip from the first drainage opening. In addition, a second drainage rib 412 extending vertically is provided at the first drainage opening, and the second drainage rib 412 extends to the diversion opening 110. After the above-mentioned condensed water drips, it will flow into the diversion opening 110 under the continuous diversion of the second drainage rib 412. Through the cooperation of the first drainage rib 411 and the second drainage rib 412, the condensed water in the first area can flow along a fixed path, ensuring that the condensed water in the first area can smoothly flow into the diversion opening 110. In addition, in this solution, the first drainage rib 411 and the second drainage rib 412 can also play the role of reinforcing ribs, providing support for the air duct housing 100 and improving the overall strength of the air duct housing 100.

[0066] As Figure 2 , in an embodiment of the present utility model, a plurality of first drainage ribs 411 are provided, and the plurality of first drainage ribs 411 are concentric and spaced apart. In this solution, a plurality of first drainage ribs 411 can be provided, and the plurality of 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. Thus, each first drainage rib 411 can drain the condensed water in its corresponding area, which is equivalent to diverting the condensed water in the first area, enabling the first drainage rib group 410 to collect and discharge the condensed water more quickly, and at the same time being beneficial to further improving the structural strength of the air duct housing 100; in addition, in another embodiment, the first drainage rib 411 and the second drainage rib 412 can be an integral structure, so that the condensed water can flow more smoothly from the first drainage rib 411 to the second drainage rib 412, and the condensed water can be discharged more quickly.

[0067] As Figure 3 , in an embodiment of the present utility model, the second drainage rib group 420 includes:

[0068] A third drainage rib 421, which is provided at the edge of the second area and is inclined towards the ground;

[0069] A fourth drainage rib 422, which is provided below the third drainage rib 421, and the fourth drainage rib 422 extends towards the diversion opening 110.

[0070] In this embodiment, the third drainage rib 421 is a ribbed plate structure protruding from the second region. The third drainage rib 421 extends obliquely from the edge of the second region in the horizontal direction towards the ground side. A fourth drainage rib 422 is provided below the third drainage rib 421. The fourth drainage rib 422 extends to the diversion port 110. When the condensed water in the second region drips onto the third drainage rib 421, it will flow along the third drainage rib 421 under the wall attachment effect. Then, the condensed water drops onto the fourth drainage rib 422 below and continues to flow into the diversion 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 enables the condensed water in the second region to flow along a fixed path, preventing the disorderly flow of the condensed water in the second region and ensuring that the condensed water in the second region can smoothly flow into the diversion port 110. In addition, in this solution, the third drainage rib 421 and the fourth drainage rib 422 can also function as reinforcing ribs, providing support for the air duct housing 100 and improving the overall strength of the air duct housing 100.

[0071] As Figure 3 , in an embodiment of the present utility model, the second region includes a first sub-region located on the side of the first region and a second sub-region located above the first region. The third drainage rib 421 includes:

[0072] The first sub-rib 4211 is disposed 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 towards the diversion port 110. The fourth drainage rib 422 is disposed below the first sub-rib 4211;

[0073] The second sub-rib 4212 is disposed in the second sub-region. The second sub-rib 4212 extends obliquely from the edge of the second sub-region close to the first region towards the first sub-rib 4211.

[0074] In this embodiment, the condensed water near the air outlet first flows under the guidance of the second sub-rib 4212, then drops onto the first sub-rib 4211 below, and continues to flow towards the diversion port 110 under the guidance of the first sub-rib 4211. Finally, it flows into the diversion port 110 under the guidance of the fourth drainage rib 422. When the condensed water drops from the second sub-rib 4212 onto the first sub-rib 4211, the flow direction will change. In this way, the flow speed of the condensed water can be reduced, thereby reducing the speed at which the condensed water finally drips onto the chassis 200, further preventing and reducing splashing, and reducing the possibility of the condensed water contacting the electrical components around the chassis 200, thereby improving the safety of using this indoor unit.

[0075] As Figure 3, in an embodiment of the present utility model, a plurality of first sub-ribs 4211 are arranged in parallel and at intervals vertically. In this way, the condensed water in the area where the first sub-ribs 4211 are located can be shunted, so that the condensed water in the first sub-area can be collected and discharged more quickly. Similarly, a plurality of second sub-ribs 4212 are arranged in parallel and at intervals horizontally. In this way, the condensed water in the area where the second sub-ribs 4212 are located can be shunted, so that the condensed water in the second sub-area can be collected and discharged more quickly.

[0076] In an embodiment of the present utility model, reinforcing ribs are arranged on the side wall of the air duct housing 100. The reinforcing ribs include a first reinforcing rib with a first protruding height and a second reinforcing rib with a second protruding height, and the first protruding height is greater than the second protruding height.

[0077] The first reinforcing rib forms a first drainage rib group 410 and a second drainage rib group 420.

[0078] In this solution, in order to improve the structural strength of the air duct housing 100, reinforcing ribs can be arranged on the side wall of the air duct housing 100. The reinforcing ribs can be configured as rib plates that extend around the air duct housing 100, are concentric and arranged at intervals in the first area, and can be configured as rib plates that are arranged alternately with each other in the second area. The reinforcing ribs can be divided into a first reinforcing rib and a second reinforcing rib. The first reinforcing rib has a first protruding height, and the second reinforcing rib has a second protruding height. The first protruding height can be greater than the second protruding height. The above-mentioned 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 that of the second reinforcing rib, the condensed water can flow over the second reinforcing rib but not over the first reinforcing rib when flowing. Therefore, the condensed water 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 air duct housing 100, the drainage of the condensed water on the side wall is also realized, which is beneficial to the design of the air duct housing 100 and simplifies the structure of the air duct housing 100, and is beneficial to reducing costs.

[0079] The present utility model also proposes an air conditioner, including the above indoor unit. The specific structure of the indoor unit refers to the above embodiments. Since this air conditioner adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0080] In one embodiment, the air conditioner includes an indoor unit and an outdoor unit. The indoor unit is connected to the outdoor unit through a flexible refrigerant pipe, and the flexible refrigerant pipe is pre-charged with refrigerant. During the factory stage, the refrigerant circuit can be pre-filled with refrigerant. During installation, only the indoor unit and the outdoor unit of the air conditioner need to be fixed respectively, without the need to assemble the refrigerant pipe and add refrigerant, thereby reducing the installation difficulty and enabling personal installation by users. In addition, the use of a flexible refrigerant pipe also allows a certain relative displacement between the pipes of the indoor unit and the outdoor unit, and can also ensure the tightness of the pipes to prevent refrigerant leakage. In addition, in another embodiment, the compressor can be arranged on the indoor unit to reduce the weight of the outdoor unit, making it more convenient for users to install personally. In addition, the compressor on the indoor unit can be provided with a noise reduction structure to reduce the working noise of the indoor unit and improve the user experience.

[0081] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An indoor unit, characterized in that: include: an air duct housing having side walls; A chassis, disposed at the bottom of the air duct shell; The splash-proof structure is arranged on one end of the side wall close to the bottom plate, and the splash-proof structure is used to receive condensed water on the side wall and drain it into the bottom plate.

2. The indoor unit according to claim 1, characterized in that: The splash-proof structure comprises: A receiving portion, disposed below the side wall and engaged with an edge of the bottom plate; The connecting portion connects the air duct shell and the receiving portion.

3. The indoor unit according to claim 2, characterized in that: A flow guiding surface is arranged on one side of the receiving portion toward the middle of the chassis, and the flow guiding surface is bent and extended toward the middle of the chassis.

4. The indoor unit according to claim 1, characterized in that: A guide port is provided at the bottom of the side wall, and the guide port is opposite to the splash-proof structure. The indoor unit also includes a drainage structure, which is provided on the side wall and is used to guide the condensed water to the guide port.

5. The indoor unit according to claim 4, characterized in that: The air duct shell is configured as a shell of a centrifugal air duct, an air outlet is arranged on the top of the air duct shell, the side wall has a first area close to the center of the air duct shell and a second area close to the air outlet, and the drainage structure includes: A first drainage rib group, provided in the first area to guide the condensed water in the first area to the diversion port; The second drainage rib group is arranged in the second area to guide the condensed water in the second area to the drainage port.

6. The indoor unit according to claim 5, characterized in that: The first drainage rib group comprises: A first drainage rib is provided in the first area and extends around the center of the air duct shell, and a first drainage port is provided on a side of the first drainage rib close to the drainage port; The second drainage rib is disposed at the first drainage port and extends toward the drainage port.

7. The indoor unit according to claim 6, characterized in that: A plurality of the first drainage ribs are provided, and the plurality of the first drainage ribs are concentric and spaced apart; and / or an end of the first drainage rib close to the first drainage port is connected to the second drainage rib.

8. The indoor unit according to claim 6, characterized in that: The second drainage rib group comprises: A third drainage rib is provided at the edge of the second area and is inclined toward the ground; The fourth drainage rib is arranged below the third drainage rib, and the fourth drainage rib extends toward the guide port.

9. The indoor unit according to claim 8, characterized in that: The second area includes a first sub-area located on the side of the first area and a second sub-area located above the first area, and the third drainage rib includes: A first sub-rib is provided in the first sub-area, the first sub-rib extends obliquely from an edge of the first sub-area away from the first region toward the guide port, and the fourth guide rib is provided below the first sub-rib; The second sub-rib is disposed in the second sub-region, and the second sub-rib extends obliquely from an edge of the second sub-region close to the first region toward the first sub-rib.

10. The indoor unit according to claim 9, characterized in that: A plurality of the first sub-ribs are arranged in parallel and at intervals in the vertical direction; and / or a plurality of the second sub-ribs are arranged in parallel and at intervals in the transverse direction.

11. The indoor unit according to claim 5, characterized in that: The side wall of the air duct shell is provided with reinforcing ribs, the reinforcing ribs include a first reinforcing rib with a first protruding height and a second reinforcing rib with a second protruding height, and the first protruding height is greater than the second protruding height; The first reinforcing ribs form the first drainage rib group and the second drainage rib group.

12. An air conditioner, characterized in that: The indoor unit comprises the indoor unit according to any one of claims 1 to 11.

13. The air conditioner according to claim 12, characterized in that: The air conditioner further comprises an outdoor unit, the indoor unit is connected to the outdoor unit via a flexible refrigerant pipe, and the flexible refrigerant pipe is pre-filled with refrigerant; and / or, The compressor of the air conditioner is arranged in the indoor unit.

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