CN219713485U - Indoor unit of air conditioner - Google Patents

Abstract

The utility model provides an air conditioner indoor unit, and relates to the technical field of air conditioners. The indoor unit of the air conditioner comprises an indoor unit body and an atomization device arranged on one side of the indoor unit body, wherein the atomization device comprises a water tank and an atomization box. The atomizing box is communicated with the water tank so that water in the water tank enters the atomizing box to be atomized to form water mist; the atomizing case is provided with the play fog structure that is located the atomizing case lateral wall and sets up the backflow structure in play fog structure below, and the exit that goes out the fog structure sets up out the fog mouth, and the one end of backflow structure is located the below that goes out the fog mouth, and the other end then extends to the atomizing incasement to with the comdenstion water drainage to the atomizing bottom of the case at play fog mouth condensation. The indoor unit of the air conditioner enables condensed water formed at the mist outlet to drop at the reflux structure and flow back into the atomization box along the reflux structure, and the condensed water at the mist outlet is prevented from dropping outside the indoor unit of the air conditioner while the condensed water is recovered, so that the use feeling is prevented from being influenced.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit.

Background

In the existing indoor unit of the air conditioner, the humidifying function is generally not available, and even if the humidifying function is available, after long-time water mist comes out, condensed water is easy to form at an outlet of sewage. In the prior art, in order to place condensate water and drip, a mist outlet is generally directed upwards, and if an air conditioning indoor unit is a wall-mounted air conditioning indoor unit, the air conditioning indoor unit is generally close to a roof, and if the mist outlet is directed upwards, water mist is always directed towards the roof, so that the roof structure is damaged. If the outlet of the humidifying device faces to the side, a solution for dripping from the side after condensation water is gathered is not available in the prior art, so that the condensation water is easy to drip to the bottom plate in the air conditioner indoor unit in the prior art, and the use experience of the air conditioner indoor unit is further affected.

Disclosure of Invention

An object of a first aspect of the present utility model is to provide an air conditioning indoor unit.

Another object of the first aspect of the present utility model is to solve the problem of the prior art that mist is discharged from the reflow apparatus so that the amount of mist is small.

In particular, the utility model also provides an air conditioner indoor unit, which comprises an indoor unit body and an atomization device, wherein the atomization device comprises:

a water tank;

the atomizing box is communicated with the water tank so that water in the water tank enters the atomizing box to be atomized to form water mist; the atomizing box is provided with and is located the play fog structure of atomizing box lateral wall and set up go out fog structure below reflux structure, the exit that goes out the fog structure sets up out the fog mouth, the one end of reflux structure is located go out the below of fog mouth, the other end then extends to in the atomizing box, in order will go out the comdenstion water drainage of fog mouth condensation extremely the atomizing box bottom.

Optionally, the device further comprises a liquid storage structure communicated with the backflow structure for storing condensed water flowing down from the backflow structure; the liquid storage structure is communicated with the atomization box so that excessive condensed water in the liquid storage structure overflows into the atomization box;

the upper wall of the backflow structure extends downwards from the direction close to the mist outlet to the liquid storage structure, and when the liquid level of condensed water in the liquid storage structure rises to the bottom of the upper wall, the backflow structure is blocked from the inside of the atomization box, so that water mist in the atomization box is prevented from flowing into the backflow structure from the bottom of the upper wall of the backflow structure; the height of the highest position of the side wall of the liquid storage structure is larger than or equal to that of the lowest position of the upper wall of the backflow structure.

Optionally, the upper wall of the backflow structure is located on the same plane, and extends from the mist outlet to the liquid storage structure.

Optionally, the upper wall of the backflow structure is a bent structure and comprises a first wall and a second wall, one end of the first wall is located at the mist outlet, the other end of the first wall is connected with one end of the second wall, and the other end of the second wall extends to the liquid storage structure.

Optionally, the first wall is disposed obliquely, and the height of the first wall at one end of the mist outlet is higher than the height of the second wall at one end connected with the second wall.

Optionally, the first wall is disposed horizontally.

Optionally, the second wall is disposed obliquely or vertically, and the height of the connection part between the second wall and the first wall is greater than the height of one end near the liquid storage structure.

Optionally, the backflow structure further includes a lower wall, the lower wall is located below the upper wall and extends from the mist outlet to the liquid storage structure, and the height of the lower wall at the mist outlet is higher than the height of the liquid storage structure, so that when the condensed water drops from the mist outlet to the lower wall, the condensed water flows to the liquid storage structure along the lower wall.

Optionally, the lowest point of the second wall is higher than the end of the lower wall near the liquid storage structure, so that a gap is formed between the second wall and the lower wall, and condensed water at the lower wall flows into the liquid storage structure along the gap.

Optionally, the device further comprises a connecting pipeline, the water tank is communicated with the atomization box by the aid of the connecting pipeline, the connecting pipeline stretches into the atomization box, and the height of the end part of the connecting pipeline stretching into the atomization box is lower than the height of the highest point of the side wall of the liquid storage structure.

This scheme sets up the backward flow structure in the below of the play fog mouth of air conditioning indoor set for the condensate water that forms in fog mouth department can drip in backward flow structure department, and in backward flow structure backward flow to the atomizing tank, when retrieving the comdenstion water, avoid the condensate water of play fog mouth to drop outside air conditioning indoor set, and then avoid influencing the use impression.

The upper wall of the reflux structure of this scheme constructs downwardly extending to the height of the highest position of the lateral wall of stock solution structure is greater than or equal to the height of the lowest position of the upper wall of reflux structure, thereby when the comdenstion water constantly increases, will the comdenstion water in the stock solution structure rises to the inside separation of reflux structure and atomizing case when the lowest end position of the upper wall of reflux structure, thereby avoid the water smoke to flow from the inside of atomizing case to the inside of reflux structure, and then avoid appearing the problem that group fog and water smoke volume are too little.

The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic structural view of an indoor unit of an air conditioner according to a specific embodiment of the present utility model;

fig. 2 is a schematic structural view of an atomizing device of an indoor unit of an air conditioner according to a specific embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along section line A-A of FIG. 2;

FIG. 4 is a first view in cross-section taken along section line B-B in FIG. 2;

FIG. 5 is a second view in cross-section taken along section line B-B in FIG. 2;

fig. 6 is a cross-sectional view of an atomizing device of an indoor unit of an air conditioner according to another embodiment of the present utility model;

fig. 7 is a cross-sectional view of an atomizing device of an indoor unit of an air conditioner according to still another embodiment of the present utility model;

fig. 8 is a cross-sectional view of an atomizing device of an indoor unit of an air conditioner according to still another embodiment of the present utility model.

Detailed Description

In the description of the present embodiment, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "bottom", "inner", "outer", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Fig. 1 is a schematic block diagram of an indoor unit of an air conditioner according to a specific embodiment of the present utility model. As a specific embodiment of the present utility model, as shown in fig. 1, the present embodiment provides an air conditioning indoor unit 100, and the air conditioning indoor unit 100 may include an indoor unit body 10 and an atomizing device 20 provided at one side or inside the indoor unit body 10. Specifically, in this embodiment, the atomizing device 20 is disposed at the side of the air conditioning indoor unit 100, so that the air conditioning indoor unit 100 has a humidifying function, thereby improving the use experience of the user.

Specifically, the atomizing device 20 of the present embodiment may include a water tank 21 and an atomizing tank 22. Wherein the atomizing tank 22 is in communication with the water tank 21. The atomizer 221 is arranged in the atomization box 22, and after the water in the water tank 21 is introduced into the atomization box 22, the water is atomized into water mist under the action of the atomizer 221 and then discharged out of the atomization box 22, so that the indoor humidification can be performed.

Specifically, the positions between the atomizing tank 22 and the water tank 21 may be arranged side by side or up and down. When the atomizing tank 22 is arranged side by side with the water tank 21, additional power is needed between the atomizing tank 22 and the water tank 21 to continuously introduce water in the water tank 21 into the atomizing tank 22, and the power can be achieved by a water pump (not shown in the figure, but only one possible embodiment).

Fig. 2 is a schematic structural view of an atomizing device of an indoor unit of an air conditioner according to a specific embodiment of the present utility model; fig. 3 is a sectional view taken along section line A-A in fig. 2. Specifically, the water tank 21 and the atomizing tank 22 are disposed up and down in this embodiment. And when the atomizing tank 22 and the water tank 21 are disposed up and down, a connection pipe 40 is provided between the water tank 21 and the atomizing tank 22, and water in the water tank 21 can flow to the atomizing tank 22 under the action of gravity. In this embodiment, in order to ensure that the water in the water tank 21 enters the atomizing tank 22 and a certain liquid level can be maintained, the water tank 21 needs to be sealed when in use. For example, a sealing cover (not shown) may be provided at the water inlet 211 of the water tank 21, and the sealing cover may be closed when the water tank 21 is filled with water through the water inlet 211, and then the water is introduced into the atomizing tank 22 through the connection pipe 40. When the water in the water tank 21 continuously flows to the atomizing tank 22 to reach the height of the bottom end of the connecting pipeline 40, the connecting pipeline 40 is blocked by the water in the atomizing tank 22, the water in the water tank 21 is in a completely sealed state, the air pressure in the water tank 21 can be continuously reduced along with the continuous flow of the water to the atomizing tank 22, the air pressure in the atomizing tank 22 is always atmospheric, and when the air pressure difference between the air pressure in the atomizing tank 22 and the air pressure in the water tank 21 is larger than the weight of the water in the connecting pipeline 40, the water in the water tank 21 stops flowing to the atomizing tank 22. The water in the atomizing tank 22 is maintained at a position approximately higher than the end of the connecting pipe 40. After water in the atomizing box 22 continuously atomizes to form water mist under the action of the atomizer 221 to flow out, the water level can continuously drop, when the water level drops to be lower than the bottom end of the connecting pipeline 40, gas in the atomizing box 22 can enter the water tank 21, the air pressure in the water tank 21 becomes large at the moment, water in the water tank 21 can continuously flow to the atomizing box 22, and the process is repeated, so that the liquid level in the atomizing box 22 is kept at a certain height and is approximately at the tail end of the connecting pipeline 40 and below. In this embodiment, the atomization tank 22 and the water tank 21 are disposed up and down, and the atomization tank 22 is disposed at the bottom of the water tank 21 for specific explanation.

FIG. 4 is a first view in cross-section taken along section line B-B in FIG. 2; fig. 5 is a second view of the sectional view taken along section line B-B in fig. 2. Specifically, as shown in fig. 4 and 5, the atomizing tank 22 is provided with a mist outlet 23 positioned on the side wall of the atomizing tank 22 and a backflow structure 24 positioned below the mist outlet 23, a mist outlet 231 is positioned at the outlet of the mist outlet 23, one end of the backflow structure 24 is positioned below the mist outlet 231, and the other end extends into the atomizing tank 22 so as to drain condensed water condensed at the mist outlet 231 to the bottom of the atomizing tank 22.

Specifically, the atomizing device 20 in this embodiment includes an atomizing tank 22, the atomizing tank 22 may include a mist outlet structure 23, the mist outlet structure 23 protrudes from a side wall of the atomizing tank 22 and protrudes outward, and the mist outlet 231 is disposed at an outlet position of the mist outlet structure 23. The water mist in the atomizing tank 22 can be discharged from the mist outlet structure 23 through the mist outlet 231 to humidify the environment.

Generally, the first baffle 232 with the through holes 233 is disposed at the mist outlet 231 to break up the mist, but the mist is inevitably condensed at the first baffle 232 although the mist can be broken up by such design. If the water mist is condensed and flows out of the mist outlet 231 to cause inconvenient use, the backflow structure 24 is arranged below the storage structure, and the backflow structure 24 can backflow the condensed water dropped at the mist outlet 231 into the atomization tank 22.

In this embodiment, the reflux structure 24 is disposed below the mist outlet 231 of the mist outlet structure 23, so that the condensed water dropped from the mist outlet 231 can flow back into the atomization tank 22 from the reflux structure 24, and the condensed water is recovered while the condensed water is prevented from dropping outside the air conditioning indoor unit 100, so that the use feeling is prevented from being affected.

As a specific embodiment of the present utility model, the indoor unit 100 of the air conditioner of the present embodiment may further include a liquid storage structure 30. The reservoir structure 30 communicates with the return structure 24 to store condensate flowing down from the return structure 24. The reservoir 30 communicates with the atomizing tank 22 such that excess condensate within the reservoir 30 overflows into the atomizing tank 22. The return structure 24 is located below the mist outlet 231 to drain condensed water condensed by the mist at the mist outlet 231 into the liquid storage structure 30. The upper wall 242 of the return structure 24 extends downward from the direction proximate the mist outlet 231 to the liquid storage structure 30, and the upper wall 242 of the return structure 24 blocks the return structure 24 from the interior of the atomizing tank 22 when the level of condensate in the liquid storage structure 30 rises to the bottom of the baffle, so as to prevent mist in the atomizing tank 22 from flowing into the return structure 24 from the bottom of the upper wall 242 of the return structure 24. Wherein the height of the highest position of the side wall of the liquid storage structure 30 is greater than or equal to the height of the lowest position of the upper wall 242 of the backflow structure 24.

Specifically, in this embodiment, the condensed water at the mist outlet 231 is guided to flow back into the liquid storage structure 30 by the backflow structure 24, and the liquid in the liquid storage structure 30 is finally flowed into the atomization tank 22, so that, generally, the space between the backflow structure 24 and the interior of the atomization tank 22 is mutually communicated, and if the mist is directly blown out from the atomization tank 22, the mist is easily blown out of the atomization tank 22 after being blown out of the mist outlet 231 from the backflow structure 24, and at this time, the mist blown out from the backflow structure 24 is not scattered by the mist outlet 231, and is easily formed into a mist. In addition, the condensed water at the reflux structure 24 is more, and the water mist is more easily contacted with the condensed water and condensed when being blown out from the reflux structure 24, so that the amount of the water mist blown out of the atomizing box 22 is greatly reduced, and the atomizing effect of the atomizing device 20 is further affected. The upper wall 242 of the backflow structure 24 of the present embodiment is configured to extend downward, and the height of the highest position of the side wall of the liquid storage structure 30 is greater than or equal to the height of the lowest position of the upper wall 242 of the backflow structure 24, so that when the condensed water is continuously increased, the condensed water in the liquid storage structure 30 rises to the lowest position of the upper wall 242 of the backflow structure 24 to block the backflow structure 24 from the interior of the atomization tank 22, thereby avoiding the water mist flowing from the interior of the atomization tank 22 to the interior of the backflow structure 24, and further avoiding the problems of mist and water mist.

As a specific embodiment of the present utility model, the return structure 24 of this embodiment may also include a lower wall 241. Wherein, the lower wall 241 is located below the upper wall 242 and extends from the mist outlet 231 to the liquid storage structure 30, and the lower wall 241 is located at the mist outlet 231 and is higher than the liquid storage structure 30, so that condensed water flows along the lower wall 241 to the liquid storage structure 30 when the condensed water drops from the mist outlet 231 to the lower wall 241.

Specifically, the lower wall 241 in the present embodiment is located below the mist outlet 231, one end of the lower wall 241 is located below the mist outlet 231, the other end is located at the liquid storage structure 30, and the condensed water from the mist outlet 231 flows down along the lower wall 241 to the liquid storage structure 30. Specifically, the lower wall 241 is inclined, and the height thereof gradually decreases from the mist outlet 231 to the liquid storage structure 30. One side wall of the liquid storage structure 30 is connected to the lower wall 241. There is a certain space between the lower wall 241 and the mist outlet 231, so the upper wall 242 needs to separate the space from the inner space of the mist box 22, when the liquid level in the liquid storage structure 30 is higher than the lowest level of the upper wall 242, a space is formed between the upper wall 242 and the lower wall 241, the upper side of the upper wall 242 and the inner side wall of the mist box 22 form another space, and the two spaces are separated from each other, namely, the separation is completed, and the water mist is prevented from flowing out of the mist box 22 from the space between the baffle and the lower wall 241.

As a specific embodiment of the present utility model, the upper wall 242 of the present embodiment is a plate-like structure located on the same plane, and extends from the mist outlet 231 to the liquid storage structure 30.

Specifically, the mist outlet structure 23 of the present embodiment is provided at the side wall of the atomizing tank 22, and is located near the top position. The upper wall 242 of the return structure 24 may be the lower wall 241 of the mist outlet structure 23, or may be a plate-like structure that is combined with the bottom of the mist outlet structure 23. Specifically, the structure of the upper wall 242 of the return structure 24 may be designed according to the actual situation. The upper wall 242 of the return flow structure 24 of the present embodiment is separated from the mist outlet structure 23, and one end of the upper wall 242 is disposed below the mist outlet 231 and is sized to extend beyond the mist outlet 231, and the other end of the upper wall 242 extends to the liquid storage structure 30.

Fig. 6 is a cross-sectional view of an atomizing device of an indoor unit of an air conditioner according to another embodiment of the present utility model. Specifically, as shown in fig. 6, the upper wall 242 of the backflow structure 24 of the present embodiment has a planar structure, and may specifically extend obliquely downward from the side near the mist outlet 231 toward the inside near the mist box 22. The upper wall 242 of the return structure 24 of the present embodiment has a simple structure, and if condensed water is provided inside the upper wall 242, the condensed water may slide down the inside of the upper wall 242 toward the inside of the atomizing tank 22. In addition, the right lowest end of the upper wall 242 is lower, so that water mist can be prevented from entering the lower space of the lower wall 241, and further condensation of the water mist can be prevented.

Fig. 7 is a cross-sectional view of an atomizing device of an indoor unit of an air conditioner according to still another embodiment of the present utility model; fig. 8 is a cross-sectional view of an atomizing device of an indoor unit of an air conditioner according to still another embodiment of the present utility model. As a specific embodiment of the present utility model, the upper wall 242 of the reflow structure 24 of this embodiment is a bent structure (as shown in fig. 4, 5, 7 and 8). Specifically, the upper wall 242 of the backflow structure 24 of the present embodiment may include a first wall 243 and a second wall 244, one end of the first wall 243 is located at the mist outlet 231, the other end of the first wall 243 is connected to one end of the second wall 244, and the other end of the second wall 244 extends to the liquid storage structure 30.

Specifically, as in the previous embodiments, the first wall 243 of this embodiment may be a part of the bottom of the mist outlet structure 23, or may be connected to the bottom of the mist outlet 231. The first wall 243 is connected to the second wall 244, and the second wall 244 extends downward to the liquid storage structure 30.

The baffle in this embodiment is designed in a bent configuration, the schedule between the first wall 243 and the second wall 244 of the baffle is adjustable, and is designed such that the configuration of the baffle is more amenable to structural adjustment depending on the configuration of the atomizing tank 22.

As a specific embodiment of the present utility model, the first wall 243 of the present embodiment may be disposed horizontally (not shown) or obliquely (as shown in fig. 4, 5, 7 and 8), and the present embodiment is configured such that the first wall 243 is disposed obliquely and abuts against the lower wall 241 of the mist outlet means 23. The first wall 243 has a height at one end of the mist outlet 231 higher than that of one end connected to the second wall 244.

As a specific embodiment of the present utility model, the first wall 243 of this embodiment is disposed horizontally (not shown in the drawings). Specifically, since the water mist generally flows along the lower wall 241 of the return structure 24 to the liquid storage structure 30 during condensation, the amount of condensed water on the side of the first wall 243 close to the upper wall 242 is small, and drainage of the condensed water is not required, so the first wall 243 of the present embodiment may be horizontally disposed.

As a specific embodiment of the present utility model, the second wall 244 of this embodiment is disposed obliquely (as shown in fig. 8) or vertically (as shown in fig. 4, 5 or 7), and the height of the junction with the first wall 243 is greater than the height of the end near the liquid storage structure 30.

Specifically, since the second wall 244 mainly serves to block the water mist from the outside, so that the water mist is prevented from entering the backflow structure 24 from the bottom of the second wall 244 and being discharged from the outlet end of the mist outlet 231, the second wall 244 may be disposed in an inclined manner or may be disposed vertically, and only needs to satisfy that the bottom height of the second wall 244 is lower than the bottom height of the liquid storage structure 30.

The above embodiments are merely possible examples of the structure of the upper wall 242 in the present utility model, and the structure and position of the upper wall 242 may be designed according to actual needs during actual design and use. For example, in the present utility model, the first wall 243 is designed to be inclined, and the second wall 244 is designed to be vertical.

As a specific embodiment of the present utility model, the liquid storage structure 30 of the present embodiment is disposed below the second wall 244 of the return structure 24, and the lower wall 241 of the return structure 24 is inclined so that condensed water can flow directly to the liquid storage structure 30. The lower end of the second wall 244 is disposed above the reservoir 30 and extends partially into the reservoir 30 (as shown in fig. 7).

The liquid storage structure 30 may be a containing cavity with an opening arranged at the bottom of the atomizing box 22, or may be a structure formed at the bottom of the atomizing box 22 by surrounding the bottom wall and the side wall of the atomizing box 22 with a blocking wall 41 protruding upwards. And the uppermost height of the blocking wall 41 is higher than the lowest point height of the second wall 244. When the level of the water flowing into the liquid storage structure 30 exceeds the lowest point height of the second wall 244, the space below the first wall 243 and to the left of the second wall 244 and the space to the right of the second wall 244 are blocked, so that the water mist cannot enter the left of the second wall 244 from the bottom of the second wall 244, and the condition that the water mist directly flows out of the space to the left of the second wall 244 to generate the mist is avoided. Of course, when the liquid level of the water in the liquid storage structure 30 gradually increases to the highest point of the baffle wall 41, the water in the liquid storage structure 30 overflows into the atomization tank 22 along the upper portion of the baffle wall 41, and then can be mixed with the water in the atomization tank 22, and atomized again as an atomized water source.

Specifically, the water tank 21 of the present embodiment may further include a water inlet 211, the water inlet 211 being designed at a side of the water tank 21, and a handle 212 may be further provided at the side of the water tank 21.

In the description of the present embodiment, a description of reference to the terms "one embodiment," "some embodiments," "an exemplary embodiment," "specifically," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. The utility model provides an indoor unit of air conditioner which characterized in that includes indoor unit body and atomizing device, atomizing device includes:

a water tank;

the atomizing box is communicated with the water tank so that water in the water tank enters the atomizing box to be atomized to form water mist; the atomizing box is provided with and is located the play fog structure of atomizing box lateral wall and set up go out fog structure below reflux structure, the exit that goes out the fog structure sets up out the fog mouth, the one end of reflux structure is located go out the below of fog mouth, the other end then extends to in the atomizing box, in order will go out the comdenstion water drainage of fog mouth condensation extremely the atomizing box bottom.

2. An indoor unit for an air conditioner according to claim 1, wherein,

the liquid storage structure is communicated with the backflow structure so as to store condensed water flowing down from the backflow structure; the liquid storage structure is communicated with the atomization box so that excessive condensed water in the liquid storage structure overflows into the atomization box;

the upper wall of the backflow structure downwards extends from a direction close to the mist outlet to the liquid storage structure, the height of the highest position of the side wall of the liquid storage structure is larger than or equal to the height of the lowest position of the upper wall of the backflow structure, so that when the liquid level of condensed water in the liquid storage structure rises to the bottom of the upper wall, the upper wall of the backflow structure is blocked from the interior of the atomization box, and water mist in the atomization box is prevented from flowing into the backflow structure from the bottom of the upper wall of the backflow structure.

3. An indoor unit for an air conditioner according to claim 2, wherein,

the upper wall of the backflow structure is a structure positioned on the same plane, and the fog outlet extends to the liquid storage structure.

4. An indoor unit for an air conditioner according to claim 2, wherein,

the upper wall of the backflow structure is of a bent structure and comprises a first wall and a second wall, one end of the first wall is located at the mist outlet, the other end of the first wall is connected with one end of the second wall, and the other end of the second wall extends to the liquid storage structure.

5. The indoor unit of claim 4, wherein the indoor unit of the air conditioner,

the first wall is obliquely arranged, and the height of one end of the first wall, which is positioned at the mist outlet, is higher than the height of one end connected with the second wall.

6. The indoor unit of claim 4, wherein the indoor unit of the air conditioner,

the first wall is disposed horizontally.

7. An indoor unit for air conditioning according to any of claims 4-6, wherein,

the second wall is arranged in an inclined mode or in a vertical mode, and the height of the joint of the second wall and the first wall is larger than that of one end, close to the liquid storage structure.

8. An indoor unit for air conditioning according to any of claims 4-6, wherein,

the backflow structure further comprises a lower wall, the lower wall is located below the upper wall and extends from the mist outlet to the liquid storage structure, the height of the lower wall at the mist outlet is higher than that at the liquid storage structure, and therefore when condensate water drops from the mist outlet to the lower wall, the condensate water flows to the liquid storage structure along the lower wall.

9. The indoor unit of claim 8, wherein the indoor unit of the air conditioner,

the lowest point height of the second wall is larger than the height of the end part of the lower wall, which is close to the liquid storage structure, so that a gap is formed between the second wall and the lower wall, and condensate water at the lower wall flows into the liquid storage structure along the gap.

10. An indoor unit for air conditioning according to any of claims 4-6, wherein,

the device also comprises a connecting pipeline, wherein the water tank is communicated with the atomizing box by the connecting pipeline, the connecting pipeline stretches into the atomizing box, and the height of the end part of the connecting pipeline stretching into the atomizing box is lower than the height of the highest point position of the side wall of the liquid storage structure.