CN215112912U - Indoor unit of air conditioner - Google Patents

Abstract

The utility model provides an indoor unit of air conditioner belongs to domestic appliance technical field. The air-conditioning indoor unit comprises a shell, wherein an air inlet is formed in the shell; the grille is connected to the air inlet and comprises a plurality of grid bars which are arranged at intervals and are obliquely arranged; and the filter screen corresponds the grid is connected the inboard of casing, the filter screen has the filter screen and supports the skeleton of filter screen, the skeleton is in projection on the grid with the bars coincide. The air-conditioning indoor unit has the advantages of small air resistance and large air inlet quantity at the air inlet position.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an indoor unit of air conditioner.

Background

In the related art, the air inlet of the indoor unit of the air conditioner usually adopts a straight grille which is simple and crossed transversely and vertically, and the air conditioner has large wind resistance and poor flow guiding effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve one of the technical problem in the correlation technique at least to a certain extent.

Therefore, the present disclosure aims to provide an indoor unit of an air conditioner, which has the advantages of small wind resistance and large air intake at the air inlet.

According to this air conditioning indoor unit of disclosure, include: the shell is provided with an air inlet; the grille is connected to the air inlet and comprises a plurality of grid bars which are arranged at intervals and are obliquely arranged; and the filter screen corresponds the grid is connected the inboard of casing, the filter screen has the filter screen and supports the skeleton of filter screen, the skeleton is in projection on the grid with the grid coincidence.

According to the embodiment of the indoor unit of the air conditioner, the grid bars comprise a plurality of first grid bars and a plurality of second grid bars, the inclination directions of the first grid bars and the second grid bars are opposite, and the first grid bars and the second grid bars are not crossed.

According to the embodiment of this disclosure indoor set of air conditioning, the grid still includes: the vertical grid bars are arranged at the air inlet at intervals, and the first grid bars and the second grid bars are connected between the vertical grid bars; the spacing distance between the adjacent first grid bars and the spacing distance between the adjacent second grid bars are smaller than the spacing distance between the adjacent vertical grid bars.

According to the embodiment of this air conditioning indoor set, the skeleton includes: the frame is internally provided with a plurality of vertical supporting strips opposite to the vertical lattice bars; the first supporting strips are connected among the vertical supporting strips and are overlapped with the first grid strips; the second supporting strips are connected among the vertical supporting strips and are overlapped with the second grid strips; and no transverse supporting strip is arranged between the first supporting strip and the second supporting strip.

According to the embodiment of the indoor unit of the air conditioner, the interval between every two adjacent first supporting strips is multiple times of the interval between every two adjacent first grid strips, and the interval between every two adjacent second supporting strips is multiple times of the interval between every two adjacent second grid strips.

According to the embodiment of this disclosure indoor set of air conditioning, the filter screen still includes: the backup pad is connected the one end of skeleton, in the backup pad with be equipped with the fluting on the relative part of skeleton, be equipped with in the fluting with first lath that first grid incline direction is the same, and with the second lath that second grid incline direction is the same.

According to the embodiment of the air-conditioning indoor unit, an installation groove is formed in one end, located in the transverse direction of the air inlet, of the machine shell, and the supporting plate is clamped in the installation groove.

According to the embodiment of the indoor unit of the air conditioner, the plurality of vertical grids comprise a first vertical grid positioned in the middle of the air inlet and second vertical grids arranged on two sides of the first vertical grid, and the width of the first vertical grid is wider than that of the second vertical grid.

According to the embodiment of the indoor unit of the air conditioner, the number of the air inlets is two, the two air inlets are separated by the transverse grid bars, and the width of the transverse grid bars is the same as that of the first vertical grid bars.

According to the embodiment of the indoor unit of the air conditioner, the area of the air inlet occupied by the first grid is equal to the area of the air inlet occupied by the second grid.

Advantageous effects

According to this disclosure, through setting up the grid of slope, compare in the relevant art the less area space that the grid formed of crossing brings the comparatively dispersion of air inlet, the great problem of air inlet windage, form longer air inlet clearance along the extending direction of grid in this disclosure, reduced the windage, increased the intake.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a view of an outlet port of an air conditioning indoor unit according to an embodiment of the present disclosure in a closed state;

fig. 2 is a view of an outlet port of an air conditioning indoor unit according to an embodiment of the present disclosure in an open state;

fig. 3 is a rear view of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 4 is an exploded view of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 5 is a view of an intake panel of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 6 is a view of an intake panel and a filter screen of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 7 is a view of a filter screen of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 8 is an exploded view of a filter screen of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 9 is a partial view of an intake panel of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 10 is a view of a set of air deflectors of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 11 is a sectional view of a set of air deflectors of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 12 is a sectional view of an air guide plate of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 13 is a side view of a louver of the indoor unit of the air conditioner according to the embodiment of the present disclosure;

FIG. 14 is an enlarged view of B of FIG. 13;

in the above figures: 1. a housing; 11. an air intake panel; 110. an air inlet; 111. mounting grooves; 112. a slot; 12. a panel base; 120. an air outlet; 13. an appearance panel; 14. a sliding panel; 2. a heat exchanger; 3. a fan assembly; 4. a grid; 40. grid bars; 41. a first grid; 42. a second grid; 43. vertical lattice bars; 44. a first vertical lattice bar; 45. a second vertical lattice bar; 46. transverse lattice bars; 5. a filter screen; 51. a framework; 511. a frame; 512. a first support bar; 513. a second supporting strip; 514. vertical supporting bars; 515. a card slot; 53. a support plate; 530. grooving; 531. a first panel; 532. a second panel; 533. a guide groove; 534. a hook is clamped; 6. an air deflector; 60. a wind guiding side surface; 61. a first wind guiding side surface; 62. a second wind guiding side surface; 63. a groove; 631. a first groove; 632. a second groove; 7. a connecting rod.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit of the air conditioner.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a cooler in a cooling mode when the indoor heat exchanger is used as an evaporator.

In the drawings, the side of the air-conditioning indoor unit facing the user when in use is defined as the front side, and the opposite side is defined as the rear side.

Referring to fig. 1 to 4, an air conditioning indoor unit according to an embodiment of the present disclosure includes: a cabinet 1, a heat exchanger 2 performing heat exchange with air introduced into the cabinet 1, and a fan assembly 3 circulating air to the inside or outside of the cabinet 1.

The air conditioning indoor unit may be a vertical cabinet unit having a substantially cylindrical shape, but the embodiments of the present disclosure are not limited thereto.

The cabinet 1 may form an overall appearance of the indoor unit of the air conditioner. The casing 1 comprises an air inlet panel 11, a panel base 12 arranged at the front side of the air inlet panel 11 and an appearance panel 13 covering the outer surface of the panel base 12. The outer surface of the air inlet panel 11 forms the rear side appearance surface of the air-conditioning indoor unit, and the appearance panel 13 forms the front side appearance surface of the air-conditioning indoor unit.

The air inlet panel 11 is roughly arc-shaped, the air inlet 110 formed in the air inlet panel 11 is arranged on the air inlet panel 11, the grille 4 is arranged at the air inlet 110, indoor air enters the indoor unit of the air conditioner from the grille 4, and the arc-shaped arrangement enables air at the rear side and near the left side and the right side to enter from the air inlet panel 11, so that the air inlet area can be increased as much as possible, and the air inlet panel has good appearance.

Referring to fig. 5, the grill 4 has a plurality of grills 40 arranged at intervals and inclined, and the grills 40 form an approximately triangular structure (indicated by dotted lines in the drawing and described later) at the air inlet 110. Thus, the inclined grille reduces the transverse lattice bars, increases the air inlet area, reduces the wind resistance, and increases the strength of the grille 4 at the air inlet 110 due to the structure similar to a triangle; in addition, the diagonal grill 40 design also adds to the aesthetic appearance.

Referring to fig. 6, the indoor unit of the air conditioner may include a filter 5 for filtering the intake airflow, the filter 5 is connected to the inner side of the intake panel 11 corresponding to the grille 4, and the air entering from the grille 4 enters the inside of the indoor unit of the air conditioner after being filtered to remove foreign dust by the filter 5. The framework 51 for supporting the filter screen on the filter screen 5 also has the support bars with oblique design coinciding with the grid bars 40 (described later), so as to achieve the effect of reducing wind resistance and increasing the intake air.

With continued reference to fig. 1-4, the panel base 12 is connected to the front end of the air intake panel 11, and both of them enclose an accommodating space in which the heat exchanger 2 and the fan assembly 3 are installed. The front side surface of the panel seat 12 is provided with a through air outlet 120, air enters from the grille 4, is filtered by the filter screen 5, exchanges heat with the heat exchanger 2 and then exits from the air outlet 120.

The cabinet 1 may further include a sliding panel 14 slidably coupled to the panel holder 12 to open or close the outlet 120.

The indoor unit of the air conditioner may include a wind deflector 6 controlling a blowing direction of air at the outlet 120, and at least one wind deflector 6 may be provided, the wind deflector 6 being swung laterally to control the blowing direction of the air. In the present embodiment, the air deflection plates 6 extend vertically, and the plurality of air deflection plates 6 are spaced apart from each other in a lateral direction by a predetermined distance. In order to achieve a larger air outlet area, the air outlet 120 is extended in the longitudinal direction, and accordingly, the longitudinal length of the air guiding plate 6 is increased, so that the thickness of the air guiding plate 6 is designed to be gradually thicker from both ends to the middle (which will be described later), and the deformation of the air guiding plate 6 can be effectively prevented.

The heat exchanger 2 is disposed inside the cabinet 1, and may be disposed on an air moving path from the intake vent 110 to the exhaust vent 120. The heat exchanger 2 serves to absorb heat to or transfer heat to air introduced into the intake vent 110.

The fan assembly 3 is disposed inside the cabinet 1. The blower assembly 3 is used to blow air so that the air can flow from the inlet 110 to the outlet 120.

Hereinafter, the grill 4 and filter screen 5 structure of the indoor unit of an air conditioner according to the embodiment of the present disclosure will be described in detail.

Continuing to refer to fig. 5, the grille 4 is integrally formed on the air intake panel 11, the air intake opening 110 is rectangular on the air intake panel 11, the grille 4 includes a plurality of grills 40, the grills 40 are obliquely arranged at the air intake opening 110, the grills 40 may be in the same oblique direction or different oblique directions, for example, a part of the grills 40 are inclined upward, another part of the grills 40 are inclined downward, and the grills 40 in different oblique directions are not crossed, so that compared with the problem that the small-area gaps formed by the crossed grills in the related art bring about dispersion of intake air and large intake air resistance, in the present disclosure, a longer intake air gap is formed along the extending direction of the grills 40, which reduces the air resistance and increases the intake air area; and a triangle is formed between the grid bars 40 and the side edge of the air inlet 110 or the vertical grid bars 43, so that the strength of the grid 4 is ensured while the air inlet area is increased.

In some embodiments of the present disclosure, the grills 40 include a plurality of first grills 41 and a plurality of second grills 42, the first grills 41 are located above the second grills 42, the first grills 41 incline upward from left to right, and the second grills 42 incline downward from left to right. The area of the air inlet 110 occupied by the first bars 41 is equal to the area of the air inlet 110 occupied by the second bars 42, and the uniform separation arrangement can improve the aesthetic appearance of the grille 4.

The first bars 41 are arranged from the upper left corner of the air inlet 110 to the lower right at intervals, and the second bars 42 are arranged from the lower left corner of the air inlet 110 to the upper right at intervals, so that, as shown by the dotted lines in fig. 5, a triangular shape is formed at the left side edge and the upper side edge of the first bars 41 and the air inlet 110, a triangular shape is formed at the left side edge and the lower side edge of the second bars 42 and the air inlet 110, and a triangular shape is formed at the joint of the first bars 41 and the second bars 42.

The grille 4 further comprises a plurality of vertical grids 43 which are transversely arranged at intervals at the air inlet 110, the first grids 41 and the second grids 42 are connected between the vertical grids 43, and the vertical grids 43 can support the inclined grids 40, so that the strength of the grille 4 is further enhanced. And, the number of the vertical grills 43 is small, and the interval is far larger than the interval distance between the adjacent grills 40, so that the air inlet space is not occupied too much.

Specifically, the vertical bars 43 include a first vertical bar 44 located in the middle of the air inlet 110, and second vertical bars 45 located on both sides of the first vertical bar 44. Because the intensity of first vertical check 44 supports the atress great, the width that sets up first vertical check 45 in this embodiment is wider than second vertical check 45, like this, according to the corresponding different width that sets up of the support intensity demand of vertical check 43 of different positions department, both can satisfy the intensity requirement and can not influence the air inlet area again.

Referring to fig. 6 and 7, the filter net 5 may include a filter net (not shown), a frame 51 for supporting the filter net, and a support plate 53 connected to one end of the frame 51.

The framework 51 includes a bezel 511, a plurality of vertical support bars 514, a first support bar 512, and a second support bar 513.

The frame 511 has a rectangular frame shape and defines a substantial boundary of the skeleton 51. The example of the vertical supporting bars 514 has three, which are arranged at intervals in the frame 511. The first and second support bars 512 and 513 are each disposed obliquely between the vertical support bars 514, and are inclined in opposite directions without crossing.

In the assembled state, in projection on the grille 4, the vertical support bars 514 of the framework 51 coincide with the vertical grills 43 of the grille 4, the first support bars 512 coincide with the first grills 41, and the second support bars 513 coincide with the second grills 42. Thus, the framework 51 is overlapped with the grille 4, and does not obstruct the air entering from the grille 4, and has the advantages of small wind resistance and large air intake.

The framework 51 of the filter screen 5 realizes the support of the filter screen in the transverse direction through the inclined first support strips 512 and the second support strips 513, and compared with the related art, the support strips in the transverse direction are omitted, the air inlet area of the filter screen 5 is increased as much as possible, the resistance of the framework 51 to the air inlet is reduced, and the wind resistance and the air inlet volume are small and large.

The number of the first and second support bars 512 and 513 may be set to be small relative to the number of the grill bars 40, that is, the first and second support bars 512 and 513 are sparse relative to the grill bars 40. The interval between two adjacent first supporting bars 512 is several times of the interval between two adjacent first grids 41, and the interval between two adjacent second supporting bars 513 is several times of the interval between two adjacent second grids 42, so that the space occupied by the framework 51 of the filter screen 5 is as small as possible.

The support plate 53 of the filter screen 5 is connected to one end of the frame 51, a slot 530 is provided on a portion of the support plate 53 opposite to the frame 51, and a first slat 531 having the same inclination direction as the first grill 41 and a second slat 532 having the same inclination direction as the second grill 42 are provided in the slot 530. Thus, in the assembled state, the first and second panels 531 and 532 of the support plate 53 are integrally consistent with the grill 40, thereby increasing the amount of intake air and improving the aesthetic appearance.

In some embodiments of the present disclosure, the framework 51 and the supporting plate 53 are clamped: referring to fig. 8, the support plate 53 is installed at the right end of the frame 51, guide grooves 533 are formed at the upper and lower ends of the support plate 53, and the upper and lower ends of the frame 51 are inserted from the guide grooves 533; two clamping hooks 534 are arranged at the right end of the supporting plate 53 at intervals, correspondingly, a clamping groove 515 is arranged at the right end of the framework 51, and the clamping groove 515 is aligned with the clamping hooks 534 and is buckled, so that the installation of the clamping hooks 534 and the clamping grooves is realized.

Referring to fig. 6 and 9, a mounting groove 111 is formed in one end of the air inlet 110 on the air inlet panel 11, and the mounting groove 111 and the air inlet 110 are separated by a second vertical lattice bar 45. The support plate 531 is snapped into the mounting groove 111.

Specifically, the intake panel 11 is provided with slots 112 at upper and lower ends of the inside of the intake vent 110, and the filter screen 5 is inserted into the slots 112 from the mounting groove 111 (the mounting direction is indicated by a hollow arrow in fig. 6) and mounted inside the intake vent 110 along the slots 112.

In some embodiments of the present disclosure, the intake vent 110 has two disposed above each other, the two intake vents 110 are separated by a transverse lattice bar 46, and the width of the transverse lattice bar 46 is the same as that of the first vertical lattice bar 44; accordingly, one filter screen 5 is installed at each air inlet 110. The air inlet 110 is divided into two parts by the transverse grid bars 46, so that the strength of the air inlet 110 can be further enhanced, and the air inlet area can be increased as much as possible.

Hereinafter, the structure of the air guide plate 6 of the air conditioning indoor unit according to the embodiment of the present disclosure will be described in detail.

Referring to fig. 10 to 14, the air guide plate 6 is a long plate, and the long member is easily deformed or bent, but if the air guide plate 6 is too thick, the air outlet resistance is increased, and therefore, in order to achieve both the effects of low wind resistance and deformation prevention, the thickness of the air guide plate 6 provided in the present disclosure is gradually increased from both ends to the middle.

For example, the cross section of the air deflector 6 is approximately rhombic (two points can be considered as two points because two ends of the air deflector 6 are thinner), and the middle part is thicker, so that the rigidity of the air deflector 6 can be increased, and the deformation of the air deflector 6 can be effectively prevented.

The outer surfaces of the air deflector 6 in the thickness direction are air guiding side surfaces 60, for example, in the rhombic cross section, four outer surfaces are the air guiding side surfaces 60 of the air deflector 6. The air conditioner indoor unit guides air at the air outlet 120 in a transverse air outlet direction through the air guide side surface 60.

In some embodiments of the present disclosure, the air guiding side surface 60 is provided with a plurality of grooves 63 extending transversely and passing through the thickest part of the air guiding plate 6, and the plurality of grooves 63 are distributed up and down on the air guiding side surface 60. The groove 63 can be used for surface decoration texture, and can also reduce the wind resistance at the thickest part of the air deflector 6 and increase the air output.

Specifically referring to fig. 12, the air guiding side surface 60 is divided into two first air guiding side surfaces 61 located outside and two second air guiding side surfaces 62 located inside by the thickest part of the air guiding plate 6 (see fig. 11, arrows in the drawing indicate the airflow direction, and air is blown out from inside to outside with reference to the flow direction of the air at the air outlet 120), and the air in the air conditioning indoor unit sequentially passes through the second air guiding side surfaces 62 and the first air guiding side surfaces 61 at the air outlet 120. The first air guiding side surface 61 is slightly longer than the second air guiding side surface 62 in the width direction, that is, the joint of the first air guiding side surface 60 and the second air guiding side surface 62 is slightly close to the inner end of the air guiding plate 6, because the swing of the air guiding plate 6 is mainly stressed on the inner end, the strength of the air guiding plate 6 close to the inner end can be enhanced.

In some embodiments of the present disclosure, referring to fig. 14 in particular, the grooves 63 include a first groove 631 and a second groove 632 that are arranged crosswise in the up-down direction, and the width of the first groove 631 gradually decreases from the inner end to the outer end of the air guiding side surface 60; the width of the second groove 632 becomes gradually larger from the inner end to the outer end. In this manner, the groove side of the groove 631 is curved, making the texture in the form of the groove 63 more aesthetically pleasing.

The depth of the groove 63 gradually becomes deeper from the two ends to the thickest part of the air guide plate 6, so that the wind resistance at the thickest part can be further reduced, and the air inlet amount is increased.

The grooves 63 are arc-shaped, and the tops of the adjacent first grooves 631 and second grooves 632 at the joint are line segments, so that the grooves 63 are compact and dense on the air deflector 6, thereby not only reducing the wind resistance at the thickest part of the air deflector 6 to the maximum extent, but also maintaining the strength at the thickest part of the air deflector 6.

In some embodiments of the present disclosure, with continued reference to fig. 12, one end of the air guiding plate 6 near the inside is provided with a chamfer, and an included angle a formed between an inclined plane of the chamfer and the width direction of the air guiding plate 6 is less than 45 °, so as to realize a large chamfer design. Because the inner end of the air deflector 6 is over against the air outlet direction, the large chamfer angle can reduce the wind resistance and increase the air outlet quantity.

In the embodiment of the present disclosure, the wind deflectors 6 have two sets of upper and lower groups, so that the length of a single group of wind deflectors 6 is short and is not easy to deform. In the present embodiment, each set of air deflectors 6 has five air deflectors arranged at intervals in the transverse direction, and each set of air deflectors 6 is driven by one motor to swing in the transverse direction.

The five air deflectors 6 in each group are connected through the transversely extending connecting rods 7, so that when the motor drives one of the air deflectors 6 to swing, the five air deflectors 6 swing simultaneously under the linkage of the connecting rods 7.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An indoor unit of an air conditioner, comprising:

the shell is provided with an air inlet;

the grille is connected to the air inlet and comprises a plurality of grid bars which are arranged at intervals and are obliquely arranged; and

the filter screen corresponds the grid is connected the inboard of casing, the filter screen has the filter screen and supports the skeleton of filter screen, the skeleton is in projection on the grid with the grid coincidence.

2. An indoor unit of an air conditioner according to claim 1, wherein the grills include a plurality of first grills and a plurality of second grills, and the first grills and the second grills are inclined in opposite directions and do not intersect with each other.

3. An indoor unit of an air conditioner according to claim 2, wherein the grill further comprises:

the vertical grid bars are arranged at the air inlet at intervals, and the first grid bars and the second grid bars are connected between the vertical grid bars; the spacing distance between the adjacent first grid bars and the spacing distance between the adjacent second grid bars are smaller than the spacing distance between the adjacent vertical grid bars.

4. An indoor unit of an air conditioner according to claim 3, wherein the frame includes:

the frame is internally provided with a plurality of vertical supporting strips opposite to the vertical lattice bars;

the first supporting strips are connected among the vertical supporting strips and are overlapped with the first grid strips; and

the second supporting strips are connected among the vertical supporting strips and are overlapped with the second grid strips;

and no transverse supporting strip is arranged between the first supporting strip and the second supporting strip.

5. An indoor unit of an air conditioner according to claim 4, wherein the interval between two adjacent first supporting bars is several times the interval between two adjacent first grills, and the interval between two adjacent second supporting bars is several times the interval between two adjacent second grills.

6. An indoor unit of an air conditioner according to claim 4, wherein the filter net further comprises:

the backup pad is connected the one end of skeleton, in the backup pad with be equipped with the fluting on the relative part of skeleton, be equipped with in the fluting with first lath that first grid incline direction is the same, and with the second lath that second grid incline direction is the same.

7. An indoor unit of an air conditioner as claimed in claim 6, wherein an installation groove is formed at one end of the casing in the transverse direction of the air inlet, and the support plate is clamped in the installation groove.

8. An indoor unit of an air conditioner according to claim 3, wherein the plurality of vertical grills include a first vertical grille located in a middle portion of the air inlet and second vertical grills located on both sides of the first vertical grille, and a width of the first vertical grille is wider than a width of the second vertical grille.

9. An indoor unit of an air conditioner according to claim 8, wherein the two air inlets are arranged up and down, the two air inlets are separated by a transverse lattice bar, and the width of the transverse lattice bar is the same as that of the first vertical lattice bar.

10. An indoor unit of an air conditioner according to claim 1, wherein the area of the air inlet occupied by the first grill is equal to the area of the air inlet occupied by the second grill.

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