CN211716686U - Air conditioner - Google Patents

Abstract

The utility model relates to an air conditioner technical field specifically provides an air conditioner. The utility model discloses aim at solving current return air inlet department and set up the not pleasing to the eye problem of grid structure enough. Mesh for this reason, the utility model discloses an air conditioner includes the air conditioning indoor set, and the casing of air conditioning indoor set includes the return air subassembly, and this return air subassembly includes panel frame and return air panel, and the panel frame forms the return air inlet, and the return air panel matches and sets up in the position that the panel frame corresponds to the return air inlet. The return air panel comprises at least one grid unit, the grid unit comprises a first surface and a second surface which are alternately arranged, the first surface is located at the downstream of the second surface along the return air direction, and at least the first surface is provided with a first ventilation structure, so that air in an indoor space enters the inside of the shell through the first ventilation structure and the return air inlet. The utility model discloses a first ventilation structure ensures the return air demand of air conditioner, through setting up first face in the dihedral low reaches of second along the return air direction, has ensured the planarization of the complete machine of air conditioner.

Description

Air conditioner

Technical Field

The utility model relates to an air conditioner technical field specifically provides an air conditioner.

Background

With the improvement of living standard of people, the requirements of people on the performance and the appearance of the air conditioner are higher and higher. Taking an air duct type air conditioner as an example, in an installed state, an indoor unit is embedded into a wall body, and an air return opening and an air outlet are exposed to the environment. The air in the indoor space enters the indoor unit through the air return inlet, is cooled or heated and then enters the indoor space through the air outlet, so that the aim of reducing or improving the temperature of the indoor space is fulfilled. Generally, a grill structure is provided at the return air inlet, and the grill structure can allow air of the indoor space to enter the indoor unit.

However, the above-described arrangement of the lattice structure may have a problem of poor appearance. For example, the grille structure has a large difference from a flat wall, and for example, when the air return opening of the indoor unit is located on the side of the indoor unit, a user in an indoor space can easily see the internal components of the indoor unit through the grille structure, which affects user experience.

Accordingly, there is a need in the art for a new solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, set up the not pleasing to the eye problem of grid structure for solving current return air inlet department promptly, the utility model provides an air conditioner, the air conditioner includes machine in the air conditioning, machine in the air conditioning includes the casing, the casing includes the return air subassembly, the return air subassembly is formed with the return air inlet, the return air subassembly includes panel frame and return air panel, be formed with the return air inlet on the panel frame, the return air panel match set up in the panel frame corresponds to the position of return air inlet, wherein, the return air panel includes at least one grid unit, the grid unit includes first face and the second face that sets up in turn, first face is followed the return air direction of air conditioner is located the low reaches of second face, wherein, at least first face is provided with first ventilation structure to the air of interior space passes through in proper order first ventilation structure, The air return opening enters the interior of the shell.

In the preferable technical scheme of the air conditioner, the panel frame comprises a body, a groove-shaped structure is formed on the body, the groove-shaped structure comprises a groove wall, and the return air panel is detachably arranged on the groove wall.

In a preferred embodiment of the above air conditioner, a first butt joint structure is disposed on a first side of the return air panel, a second butt joint structure is disposed on an opposite side of the first side, and the return air panel is detachably disposed on the tank wall by the first butt joint structure and the second butt joint structure, where the first butt joint structure and the second butt joint structure are different.

In a preferred embodiment of the air conditioner, a third docking structure corresponding to the first docking structure and a fourth docking structure corresponding to the second docking structure are disposed on the tank wall, wherein the third docking structure and the fourth docking structure have different heights in a depth direction of the groove-shaped structure.

In the preferable technical scheme of the air conditioner, the first butt joint structure is a first buckle, and the second butt joint structure is a bolt.

In a preferred embodiment of the air conditioner, the groove wall is provided with a limiting structure at a position corresponding to the first side and/or the opposite side, and in an assembled state, the inner side of the return air panel is lapped to the limiting structure.

In a preferred embodiment of the air conditioner, the return air assembly further includes a filter member disposed in the groove-like structure.

In a preferred technical solution of the above air conditioner, the groove-shaped structure includes a groove bottom, the groove bottom is provided with a second buckle, the groove bottom and the second buckle form an accommodating space, and the filtering member is disposed in the accommodating space.

In a preferred embodiment of the above air conditioner, the grille unit further includes a third surface and a fourth surface which are oppositely disposed, and the first surface and the two adjacent second surfaces are connected through the third surface and the fourth surface.

In a preferred embodiment of the air conditioner, one of the third surface and the fourth surface is provided with the second ventilation structure.

The technical scheme of the utility model wherein, the air conditioner includes the air conditioning indoor set, and the air conditioning indoor set includes the casing, and the casing includes the return air subassembly, and the return air subassembly includes panel frame and return air panel, and the return air panel matches and sets up in return air inlet department to the air of interior space gets into the inside of casing through return air panel and return air inlet in proper order. Wherein, the return air panel includes at least one grid unit, and this grid unit includes first face and the second face that sets up in turn, and first face is located the inboard of second face, is provided with first ventilation structure at least in first face to allow the inside of indoor space's air through first ventilation structure and return air inlet entering casing in proper order, thereby ensured air conditioner's return air demand. In addition, the first surface provided with the first ventilation structure is arranged on the inner side of the second surface, the second surface and the non-first ventilation structure part of the first surface well shield parts inside the shell, and the flat second surface which is located on the outer side and is seen from the user at first sight ensures the flatness of the whole machine.

The utility model discloses an among the preferred technical scheme, the panel frame includes the body, is formed with groove-shaped structure on the body, and this groove-shaped structure includes the cell wall, and return air panel detachably sets up in the cell wall, so, when needs clearance return air inlet and return air panel, tears the return air panel open, can make the return air inlet expose in the environment, and then just can wash return air inlet and return air panel respectively. Specifically, a first butt joint structure is arranged on a first side of the air return panel, a second butt joint structure is arranged on the opposite side of the air return panel, and the first butt joint structure is different from the second butt joint structure. For example, the first docking structure and the second docking structure have different structural arrangements, and for another example, the first docking structure and the second docking structure have different extending directions: the first docking structure extends in the width direction of the return air panel, the second docking structure extends in the thickness direction of the return air panel, and so on. Preferably, first butt joint structure is first buckle, and second butt joint structure is the bolt, with the help of first buckle and bolt, can set up return air panel detachably in the cell wall.

Further, the cell wall is provided with limit structure in the position that corresponds to the return air panel, and under the state of having assembled, the downstream side and the limit structure of the return air direction of air conditioner edge are offset to the return air panel, so, just can block the downstream end motion of return air panel towards the return air direction to can set up the return air panel in the cell wall better.

Further, the return air subassembly still includes filtering component, and the slot-shaped structure still includes the tank bottom, and the tank bottom is provided with the second buckle, and this second buckle forms accommodation space with the tank bottom, and filtering component sets up in this accommodation space, and so, the air of indoor space is at first through the first ventilation structure arrival filtering component of return air panel, then filters the impurity in the air through filtering component, gets into the inside of casing through the return air inlet again.

Further, the return air panel still includes third face and fourth face, and the third face sets up with the fourth face is relative to, and first face meets through third face and fourth face with two adjacent second faces. In addition, first face and second face are parallel to each other, third face and fourth face are parallel to each other, first face is perpendicular with third face and fourth face respectively, the second face is perpendicular with third face and fourth face respectively, so, by two convex surfaces, a concave surface and the grid unit that constitutes of third face and the fourth face of connecting two convex surfaces and a concave surface just formed a continuous structure, can play certain effect of sheltering from, and then the inside part of casing just can be sheltered from better by the return air panel that a plurality of aforementioned grid unit constitute, thereby the planarization of complete machine has been ensured.

Further, one of the third face and the fourth face is provided with the second ventilation structure, so, both increased the return air area that allows the air to pass through on the return air panel, satisfied the demand of the return air volume of air conditioner better, ensured simultaneously again that the return air panel has sufficient face of sheltering from, can shelter from the internals of casing better.

Drawings

The present invention is described below with reference to the accompanying drawings. In the drawings:

fig. 1 is a first schematic structural diagram of a return air assembly of an air conditioner according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of detail A of FIG. 1;

fig. 3 is a schematic structural diagram of a return air assembly of an air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic structural view illustrating a filter member of an air conditioner according to an embodiment of the present invention being fastened to a panel frame;

FIG. 5 is an enlarged schematic view of detail B of FIG. 4;

fig. 6 is a first schematic structural diagram of a panel frame of an air conditioner according to an embodiment of the present invention;

FIG. 7 is an enlarged schematic view of detail C of FIG. 6;

fig. 8 is a second schematic structural view of a panel frame of an air conditioner according to an embodiment of the present invention;

FIG. 9 is an enlarged schematic view of detail D of FIG. 8;

fig. 10 is a first schematic structural view of a return air panel of an air conditioner according to an embodiment of the present invention;

fig. 11 is a second schematic structural view of a return air panel of an air conditioner according to an embodiment of the present invention;

FIG. 12 is an enlarged schematic view of detail E of FIG. 11;

fig. 13 is a schematic structural view of a filter member of an air conditioner according to an embodiment of the present invention;

fig. 14 is an enlarged schematic view of a portion F in fig. 13.

List of reference numerals:

1. a panel frame; 11. a trough-like structure; 111. the bottom of the tank; 1111. a second buckle; 112. a trench wall; 1121. a clamping hole; 1122. a strip structure; 1123. connecting holes; 12. a second portion; 121. screw holes; 122. a positioning column; 2. an air return panel; 21. a concave surface; 211. a first vent hole; 22. a convex surface; 23. a third surface; 24. a fourth surface; 241. a second vent hole; 25. a first buckle; 26. a bolt; 3. a filter member; 31. a frame; 311. a clamping structure; 3111. a transverse portion; 3112. a vertical portion; 32. and (4) a filter screen.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the present embodiment has been described with reference to a duct type air conditioner as an example, other types of air conditioners such as a wall-mounted type air conditioner and a ceiling type air conditioner may be applied.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, fig. 2, fig. 3, fig. 10 and fig. 11, fig. 1 is a first schematic structural diagram of a return air assembly of an air conditioner according to an embodiment of the present invention, fig. 2 is an enlarged schematic diagram of a part a in fig. 1, fig. 3 is a second schematic structural diagram of a return air assembly of an air conditioner according to an embodiment of the present invention, fig. 10 is a first schematic structural diagram of a return air panel of an air conditioner according to an embodiment of the present invention, and fig. 11 is a second schematic structural diagram of a return air panel of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, fig. 2, fig. 3, fig. 10 and fig. 11 and according to the orientation shown in fig. 10, the duct type air conditioner includes an indoor air conditioner unit, the indoor air conditioner unit includes a casing, the casing has an air return opening and an air outlet, air in an indoor space enters the inside of the casing through the air return opening, and enters the indoor space through the air outlet after being heated or cooled, so that the purpose of heating or cooling is achieved. The casing includes the return air subassembly, and this return air subassembly includes the return air panel 2 that sets gradually along the return air direction, filtering component 3 and panel frame 1, is formed with above-mentioned return air inlet on the panel frame 1, and the return air panel matches and sets up in the position that the panel frame corresponds to this return air inlet, so, the inside of indoor space's air from a left side to the right side through return air panel 2, filtering component 3 and panel frame 1 entering casing through the return air inlet in proper order. Wherein, the return air panel 2 includes at least one grille unit, the grille unit includes as the first face, the concavity 21 located on the left side and as the second face, the convexity 22 located on the upper right of the concavity 21, according to the orientation shown in fig. 1, the concavity 21 and the convexity 22 both extend from left to right along the horizontal direction, at least the concavity 21 is provided with the first ventilation structure, so that the air of the indoor space can enter the inside of the casing through the first ventilation structure, thereby ensuring the return air volume of the air conditioner. In addition, through convex surface and concave surface setting, better sheltered from the inside part of casing, in addition from the user's that is located the tuber pipe formula air conditioner below angle, what first eye can see is smooth second face to can guarantee the planarization of complete machine better.

It is understood that the concave surface and the convex surface may also extend along the vertical direction or other possible directions, and those skilled in the art can flexibly select the extending direction of the concave surface and the convex surface according to the specific application scenario so as to adapt to the more specific application scenario.

Referring to fig. 3 to 12, fig. 4 is a schematic structural view illustrating a filtering member of an air conditioner according to an embodiment of the present invention being clamped to a panel frame, fig. 5 is an enlarged schematic view illustrating a portion B of fig. 4, fig. 6 is a schematic structural view illustrating a panel frame of an air conditioner according to an embodiment of the present invention, fig. 7 is an enlarged schematic view illustrating a portion C of fig. 6, fig. 8 is a schematic structural view illustrating a panel frame of an air conditioner according to an embodiment of the present invention, fig. 9 is an enlarged schematic view illustrating a portion D of fig. 8, and fig. 12 is an enlarged schematic view illustrating a portion E of fig. 11. As shown in fig. 3 to 12 and according to the orientation shown in fig. 4, the panel frame 1 includes a body, the body includes a first portion and a second portion 12, wherein the first portion is a groove-shaped structure 11, the groove-shaped structure 11 includes a groove bottom 111 and a groove wall 112 surrounding the groove bottom 111, the groove-shaped structure 11 forms an air return opening, the groove bottom 111 is a hollow structure, and air from the air return panel 2 enters the interior of the housing through the hollow part of the groove bottom 111; the second portion 12 is surrounded on the top of the groove wall 112, three screw holes 121 are arranged at intervals on the upper and lower sides of the second portion 12, two positioning columns 122 extend outwards from two ends of the second portion, the housing is provided with a hole-shaped structure and a positioning hole at corresponding positions, and the panel frame 1 and the corresponding screw holes 121 on the housing are connected with the hole-shaped structure and the positioning columns 122 are connected with the positioning hole by bolts, so that the panel frame 1 can be fixedly arranged on the housing. In addition, the second part 12 is provided with a concave-convex structure which is approximately the same as the structure of the air return panel 2; the length and width of the return air panel 2 are the same as those of the groove bottom 111. In an assembled state, the air return panel 2 is just clamped at the upper part of the groove-shaped structure 11, and the air return panel 2 is flush with the second part 12, so that on one hand, air in an indoor space can enter the shell through the hollow part on the groove bottom 111 after passing through the air return panel 2, and the air return performance of the air pipe type air conditioner is ensured; on the other hand, the return air panel 2 is flush with the second section 12 and has substantially the same structure, thereby ensuring the flatness of the whole machine.

With continued reference to fig. 3 to 12, according to the orientation shown in fig. 4, a plurality of strip-shaped structures 1122 serving as limiting structures are circumferentially arranged at intervals at the upper end of the groove wall 112, wherein the groove wall 112 at the upper end is provided with a plurality of clamping holes 1121 below the strip-shaped structures 1122, and the groove wall 112 at the lower side is provided with a plurality of connecting holes 1123 above the strip-shaped structures 1122; according to the orientation shown in fig. 10, the right side of the return air panel 2 is provided with a plurality of first buckles 25 which are distributed along the length direction of the return air panel and extend downwards to serve as a first butt joint structure, the left side of the return air panel 2 is provided with a plurality of pins 26 which are distributed along the length direction of the return air panel and extend outwards to serve as a second butt joint structure, the first buckles 25 can be matched and connected with the clamping holes 1121, and the pins 26 can be matched and connected with the connecting holes 1123. In the assembled state, the first fasteners 25 are in one-to-one corresponding clamping connection with the clamping holes 1121, and the bolts 26 are inserted into the corresponding connecting holes 1123, and the lower surface of the return air panel 2 abuts against the upper surface of the strip-shaped structure 1122 so as to prevent the return air panel 2 from moving downwards, so that the return air panel 2 can be clamped in the panel frame 1. Obviously, the clamping hole and the first clamping buckle are only an exemplary description of the first butt joint structure and the second butt joint structure, and a person skilled in the art can flexibly select the clamping mode of the return air panel and the panel frame according to a specific application scenario so as to adapt to a more specific application.

It can be understood that the first butt joint structure and the second butt joint structure may also have different extending directions but the same structure, or may have the same extending direction but different structures, for example, the first butt joint structure and the second butt joint structure are both configured as a snap, but the first butt joint structure extends outward along the width direction of the return air panel, and the second butt joint structure extends downward along the thickness direction of the return air panel, and the like.

It can be understood that, the first butt joint structure and the second butt joint structure can also be arranged on the left and right sides of the return air panel, and those skilled in the art can flexibly select the arrangement positions of the first butt joint structure and the second butt joint structure according to specific application scenarios as long as the return air panel can be detachably arranged on the panel frame.

It can be understood that the return air panel can also be detachably disposed on the panel frame in other manners, such as screwing, bonding, magnetic adsorption, etc., and those skilled in the art can flexibly select the disposing manner of the return air panel detachably disposed on the panel frame according to the specific application scenario so as to adapt to the more specific application scenario.

Referring to fig. 3 to 9, 13 and 14, fig. 13 is a schematic structural view of a filter member of an air conditioner according to an embodiment of the present invention, and fig. 14 is an enlarged schematic view of a portion F of fig. 13. As shown in fig. 3 to 9, 13 and 14 and according to the orientation shown in fig. 4, a plurality of second buckles 1111 as clamping members extend upwards from left to right on the upper and lower sides of the groove bottom 111, and a receiving space is formed between the plurality of second buckles 1111 and the groove bottom 111; the filter member 3 includes a filter screen 32 and a frame 31 surrounding the filter screen 32, the frame 31 is substantially square and has a structure with a size (e.g., length and width) substantially the same as that of the slot bottom 111, a plurality of engaging structures 311 are disposed from left to right on two long sides of the frame 31 and are matched with the second fasteners 1111 one by one, the engaging structures 311 are configured to be similar to an arch shape and include a horizontal portion 3111 and vertical portions 3112 located at two sides of the horizontal portion 3111, and in an assembled state, the second fasteners 1111 abut against the horizontal portion 3111. Like this, just can set up filter component 3 in accommodation space through the joint of card putting structure 311 and second buckle 1111, also can locate panel frame 1 with filter component 3 card promptly, and under the state of assembling, the bottom and the tank bottom 111 of frame 31 offset, through such setting, the air of indoor space first reaches return air panel 2 department, passes return air panel 2 and reaches filter component 3 department, after filter component 3 filters the impurity in the air, again via the inside of the fretwork department entering casing of tank bottom 111. Obviously, the second buckle and the clamping position are only an exemplary description of clamping the filter member to the panel frame, and the clamping mode of the filter member to the panel frame may be flexibly selected according to a specific application scenario in the field so as to adapt to a more specific application scenario.

It is understood that the filter member may be disposed on the panel frame in other manners, such as screwing, bonding, magnetic adsorption, etc., and those skilled in the art may also flexibly select the disposing manner of the filter member on the panel frame according to the specific application scenario so as to adapt to the specific application scenario.

It should be noted that, through setting up the equal detachably of return air panel and filter component in the panel frame, when needs clearance filter screen, only need in proper order with return air panel and filter component dismantlement get off, can realize filter component's clearance.

With continued reference to fig. 2, 10, 11 and 12, the first ventilation structure includes a plurality of first ventilation holes 211, and the first ventilation holes 211 are arranged in a structure that penetrates the return air panel in the thickness direction of the return air panel and has a substantially circular aperture, so that the air entering the inside of the housing through the first ventilation holes 211 is divided into a plurality of fine airflows entering the inside of the housing, thereby ensuring the uniformity of the return air, and the arrangement of the plurality of first ventilation holes 211 forms a sufficient return air area, thereby ensuring the return air volume requirement of the duct type air conditioner.

It can be understood that on the basis of the principle of the present invention, the first ventilation structure can be further configured to be other structures that can allow air to pass through, such as a hollow structure, and those skilled in the art can flexibly select according to specific application scenarios so as to adapt to more specific application scenarios.

With continuing reference to fig. 1, 2, 3, 10, 11 and 12 and in the orientation shown in fig. 1, the grid element further includes oppositely disposed third and fourth faces 23 and 24, it can be seen that the third face 23 is located above, the fourth face 24 is located below, the third face 23 is vertically disposed between the upper end of the convex face 22 and the lower end of the concave face 21, the fourth face 24 is vertically disposed between the upper end of the concave face 21 and the lower end of the convex face 22, i.e. the concave surface 21 meets the two adjacent convex surfaces 22 via a third surface 23 and a fourth surface 24, the concave surface 21 is parallel to the convex surface 22, the third surface 23 is parallel to the fourth surface 24, thus, the plurality of return air panels 2 each including the grill unit formed by the two convex surfaces 22, the one concave surface 21, and the third surface 23 and the fourth surface 24 connecting the two convex surfaces 22 and the one concave surface 21 can shield the internal components of the casing more effectively, thereby ensuring the flatness of the entire unit. Obviously, the included angle between the third surface and the concave surface or the convex surface, and the included angle between the fourth surface and the concave surface or the convex surface may also be other angles, and those skilled in the art may flexibly set the specific value of the included angle according to the specific application so as to adapt to the more specific application.

Referring to fig. 1, 2, 3, 10, 11 and 12, a second ventilation structure is disposed on the fourth surface 24, and the second ventilation structure includes a plurality of second ventilation holes 241, two adjacent second ventilation holes 241 are separated by a rib, or the second ventilation structure is a hollow structure. And the radial dimension of second ventilation hole 241 is greater than the radial dimension of first ventilation hole 211, so, has just increased the area that can allow the air to pass through on the return air panel, and the air of indoor space can be simultaneously from the air vent on the concave surface and the fretwork department of fourth face gets into in the casing to can satisfy the return air volume of tuber pipe air conditioner better. Obviously, the second ventilation holes may be arranged in other forms, such as circular holes, triangular holes, etc., and those skilled in the art may flexibly select the arrangement mode of the second ventilation holes according to a specific application scenario, so as to adapt to a more specific application scenario.

It can be understood that the third surface may also be provided with the second ventilation structure, for example, only the third surface is provided with the second ventilation structure, or the third surface and the fourth surface are both provided with the second ventilation structure, or the third surface and/or the fourth surface may also be provided with the second ventilation structure in a local area, and a person skilled in the art may flexibly select the setting position of the second ventilation structure according to a specific application scenario as long as the air return amount of the air duct type air conditioner can be satisfied.

It should be noted that, the first vent hole and the second vent hole may also be formed by gradually reducing, gradually increasing, unchanging, reducing first and then increasing, or other possible changing manners, and the size, shape and distribution manner of the first vent hole and the second vent hole may also be flexibly adjusted according to the actual situation, and the setting manner of the first vent hole and the second vent hole may be flexibly selected according to the specific requirements, so as to adapt to more specific application requirements.

In summary, in the preferred technical solution of the present invention, the return air panel is disposed at the position of the panel frame corresponding to the return air inlet in a matching manner, and the first ventilation structure is disposed at least on the first surface of the return air panel, so that the flatness of the whole machine is ensured on the basis of ensuring the return air function of the return air inlet; the air return panel is detachably arranged on the groove wall of the panel frame through a first buckle arranged on one side of the air return panel and a bolt arranged on the opposite side of the air return panel; through the arrangement of the limiting structure, the air return panel can be better arranged on the groove wall; the filtering component is arranged in the accommodating space formed between the second buckle of the groove bottom and the groove bottom, so that air in the indoor space sequentially enters the shell through the air return panel, the filtering component and the groove bottom; through set up the second ventilation structure on third face and/or fourth face, further increased the return air area of return air panel to the amount of wind that returns that can satisfy the air conditioner better.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. An air conditioner is characterized by comprising an air conditioner indoor unit, the air conditioner indoor unit comprises a shell, the shell comprises a return air assembly, the return air assembly comprises a panel frame and a return air panel, a return air inlet is formed in the panel frame, the return air panel is arranged at the position, corresponding to the return air inlet, of the panel frame in a matching mode,

wherein the return air panel includes at least one grill unit including first and second faces alternately arranged, the first face being located downstream of the second face in a return air direction of the air conditioner,

wherein, at least the first face is provided with first ventilation structure to the air of indoor space gets into the inside of casing through first ventilation structure, the return air inlet in proper order.

2. The air conditioner of claim 1, wherein the panel frame includes a body having a channel formed therein, the channel including a channel wall, the return air panel being removably disposed on the channel wall.

3. The air conditioner as claimed in claim 2, wherein a first abutting structure is provided at a position of a first side of the return air panel, and a second abutting structure is provided at an opposite side of the first side, the return air panel being detachably provided to the tank wall by means of the first and second abutting structures,

wherein the first and second docking structures are different.

4. The air conditioner as claimed in claim 3, wherein a third docking structure corresponding to the first docking structure and a fourth docking structure corresponding to the second docking structure are provided on the tank wall,

wherein the third and fourth docking structures differ in height along a groove depth direction of the groove-like structure.

5. The air conditioner of claim 4, wherein the first mating structure is a first snap and the second mating structure is a latch.

6. The air conditioner as claimed in claim 3, wherein the groove wall is provided with a stopper structure at a position corresponding to the first side and/or the opposite side, and

in an assembled state, the inner side of the return air panel is lapped to the limiting structure.

7. The air conditioner of claim 2, wherein the return air assembly further comprises a filter member disposed in the trough-like structure.

8. The air conditioner according to claim 7, wherein the groove-like structure includes a groove bottom provided with a catching member, the groove bottom and the catching member forming a receiving space, the filter member being disposed in the receiving space.

9. The air conditioner according to any one of claims 1 to 8, wherein the grill unit further comprises third and fourth faces disposed opposite to each other, and the first face and the adjacent two second faces are connected by the third and fourth faces.

10. The air conditioner according to claim 9, wherein one of the third face and the fourth face is provided with a second ventilation structure.

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