CN214501443U - Indoor unit of air conditioner - Google Patents

Abstract

The utility model provides an air-conditioning indoor unit, which comprises a rear panel, a plurality of fixing columns and a limiting groove, wherein the rear panel is provided with an air inlet, the bottom surface of the rear panel is provided with the plurality of fixing columns and the limiting groove, and the middle part of each fixing column is provided with a fixing groove; and the base is provided with a limiting hole/a limiting column corresponding to the fixing column/the limiting groove, the fixing column is inserted into the limiting hole, the limiting column is inserted into the limiting groove to be installed and positioned, and a fastener penetrates into the limiting hole and the fixing groove to fixedly connect the rear panel and the base. The utility model discloses an indoor set of air conditioner is provided with spacing hole and spacing post through being provided with a plurality of fixed columns and spacing groove on the rear panel on the base, inserts spacing hole and spacing post through the fixed column and inserts the spacing groove and install the location, and fastener fixed connection rear panel and base have strengthened the connection stability of rear panel and base, have made things convenient for the installation of rear panel and base.

Description

Indoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of air conditioning, especially, relate to an indoor unit of air conditioner.

Background

At present, the household appliance industry is in a situation of intense competition, each big competitive product has unique innovation in the aspects of functions, appearance and the like, and the product details are also important factors influencing the purchasing power of consumers.

Most of air inlets of the existing air-conditioning indoor unit are arranged on the rear panel. Therefore, the air inlet of the air inlet can influence the connection stability of the rear panel. Therefore, the problems to be solved at present are to optimize the installation mode of the panel and the base and to improve the stability of the rear panel and the base after installation.

In view of this, the present invention is proposed.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. For this purpose,

the utility model discloses an air-conditioning indoor unit is put forward to in the stability that reinforcing rear panel and base are connected.

In order to achieve the purpose, the embodiment of the utility model provides an air-conditioning indoor unit, which comprises a rear panel, a plurality of fixing columns and a limiting groove, wherein the rear panel is provided with an air inlet, the bottom surface of the rear panel is provided with the plurality of fixing columns and the limiting groove, and the middle part of each fixing column is provided with a fixing groove; and the base is provided with a limiting hole/a limiting column corresponding to the fixing column/the limiting groove, the fixing column is inserted into the limiting hole, the limiting column is inserted into the limiting groove to be installed and positioned, and a fastener penetrates into the limiting hole and the fixing groove to fixedly connect the rear panel and the base.

Therefore, the utility model discloses an indoor set of air conditioner is provided with spacing hole and spacing post through being provided with a plurality of fixed columns and spacing groove on the rear panel on the base, inserts spacing hole and spacing post through the fixed column and inserts the spacing groove and install the location, and fastener fixed connection rear panel and base more are favorable to strengthening the connection stability of rear panel and base, have made things convenient for the installation of rear panel and base.

In addition, according to the utility model discloses above-mentioned embodiment the machine in air conditioning can also have following additional technical characterstic:

according to the utility model discloses an embodiment, the periphery of fixed column is connected with a plurality of lateral wall strengthening ribs in order to strengthen the intensity of fixed column.

According to the utility model discloses an embodiment, the inboard edge of spacing groove is provided with a plurality of cell wall strengthening ribs, the cell wall strengthening rib is used for the reinforcing the spacing groove with spacing post's connection fastening nature.

According to the utility model discloses an embodiment, spacing hole department is provided with the chamfer to in the direction installation.

According to the utility model discloses an embodiment, spacing hole runs through the base.

According to the utility model discloses an embodiment, the link of spacing post with the free end of spacing post sets up relatively, the link of spacing post is connected on the base, the free end of spacing post is provided with the chamfer so that the installation direction.

According to the utility model discloses an embodiment, the spacing groove sets up to two, two the spacing groove for the central symmetry of rear panel sets up.

According to the utility model discloses an embodiment, the fixed column sets up to three, the fixed column interval sets up the bottom surface of rear panel.

According to the utility model discloses an embodiment, the rear panel sets up to the arc.

According to the utility model discloses an embodiment, still include front panel and side board, the front panel sets up the front side at the air conditioning indoor set, the side board sets up the both sides at the air conditioning indoor set respectively, the front panel the side board with the rear panel constitutes the casing jointly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

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 schematic front view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic rear view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating the assembly of a top plate of an indoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

fig. 6 is a schematic side panel assembly view of an indoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 7 is an enlarged view of portion B of FIG. 6;

fig. 8 is a schematic diagram of a rear panel structure of an indoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 9 is an enlarged view of portion C of FIG. 8;

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

fig. 11 is a schematic view of a base structure of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 12 is an assembly schematic view of an electrical box of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 13 is a schematic structural view of an electrical box of an indoor unit of an air conditioner according to an embodiment of the present invention.

In the above figures: (ii) a 1. A housing; 11. a rear panel; 111. an air inlet; 112. fixing a column; 1121. fixing grooves; 1122. side wall reinforcing ribs; 113. a limiting groove; 1131. groove wall reinforcing ribs; 12. a side panel; 121. a first limit edge; 122. a hook is clamped; 13. a front panel; 131. a second limit edge; 132. a third limit edge; 1321. an open slot; 133. an air outlet; 2. a panel base; 21. a positioning column; 211. a fastening groove; 22. a long round hole; 23. a linear clamping groove; 24. a wire turning clamping groove; 3. a base; 31. a through hole; 311. a reinforcing plate; 312. an extension portion; 32. a fastening hole; 33. a limiting hole; 34. a limiting column; 35. a first slot part; 351. a first boss; 352. a first card slot; 36. a second slot portion; 361. a second boss; 362. a second card slot; 37. a wiring groove; 4. a volute; 5. a water pan; 6. an indoor heat exchanger; 7. chamfering; 8. an electrical box; 81. a wiring port; 9. a top plate; 91. and an upper clamping groove.

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.

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.

The terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features.

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 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 air conditioner includes an outdoor unit, which refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, and an air conditioning indoor unit of the air conditioner including an indoor heat exchanger, and an expansion valve may be provided in the air conditioning indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

The air conditioning indoor unit is connected to an outdoor unit installed in an outdoor space through a duct. The outdoor unit may be provided with a compressor, an outdoor heat exchanger, an outdoor fan, an expander, and the like of a refrigeration cycle, and the indoor unit of the air conditioner may be provided with an indoor heat exchanger and an indoor fan.

Referring to fig. 1 to 13, the present embodiment provides an air conditioning indoor unit, and a side of the air conditioning indoor unit facing a user when in use is a front side. Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

The air conditioning indoor unit according to the embodiment of the present disclosure may include a case 1, an indoor heat exchanger 6, and a water collector 5.

For example, the air-conditioning indoor unit can be in a cabinet type or a vertical hanging type, and the shape of the air-conditioning indoor unit can be a cylinder-like shape or a long column shape. A plurality of components constituting a refrigeration cycle are installed in the casing 1. The casing 1 defines the overall appearance of the air conditioning indoor unit, the casing 1 comprising side panels 12 defining a side configuration, a front panel 13 defining a front configuration and a rear panel 11 defining a rear configuration.

When the air conditioner is installed and used, one side facing a user is front, and the opposite side is rear.

The casing 1 is provided with an air inlet 111 and an air outlet 133, the air inlet 111 is provided on the rear panel 11, and the air outlet 133 is provided on the front panel 13 on the front side of the indoor unit of the air conditioner. Under the action of the fan, indoor air is introduced into the air conditioning indoor unit through the air inlet 111, exchanges heat with the indoor heat exchanger 6, and is discharged to an indoor room through the air outlet 133.

The air inlet 111 may be formed by opening at least a portion of the rear side or both the left and right sides of the rear panel 11, and the air outlet 133 may be formed by opening at least a portion of the front panel 13. Also, the intake port 111 may be provided with an intake grill for preventing introduction of foreign substances into the indoor unit of the air conditioner.

The side panels 12 are arranged on the left side and the right side of the air-conditioning indoor unit, the vertical edges of the side panels 12 are connected with first limiting edges 121, and the first limiting edges 121 are bending edges of the side panels 12. The front panel 13 is arranged at the front side of the air-conditioning indoor unit, and the vertical edge of the front panel 13 is connected with a second limit edge 131. The second limiting edge 131 is a bent edge of the front panel 13. The top plate 9 is connected to the upper ends of the side plate 12 and the front plate 13, and an upper clamping groove 91 is formed in the top plate 9. During assembly, the first bending edge and the second bending edge are attached to each other and assembled in the upper clamping groove 91 together. Go up draw-in groove 91 and first limit of bending and the second limit of bending closely laminate, strengthened roof 9, side board 12 and front panel 13 within a definite time connection compactness for the integral connection of air conditioning indoor set is more stable. Go up draw-in groove 91 and first spacing limit 121 and the cooperation of second spacing limit 131 and be favorable to roof 9 and front panel 13 and the quick location of side board 12 when installing, improve the installation effectiveness. In this embodiment, the front panel 13 and the side panels are made of aluminum alloy, so that the structural strength of the front panel 13 and the side panels 12 can be improved, and the supporting capability of the front panel 13 and the side panels 12 can be improved.

Specifically, the inner side wall of the side panel 12 is provided with a hook 122, and the second limiting edge 131 of the front panel 13 is connected with a third limiting edge 132. The third limiting edge 132 is bent close to the side panel 12 so that the third limiting edge 132 is parallel to the side panel 12. The third limiting edge 132 is provided with an open slot 1321 matched with the hook 122, and the hook 122 is inserted into the open slot 1321 to fixedly connect the side panel 12 and the front panel 13, so that the tightness of the connection between the side panel 12 and the front panel 13 is further enhanced, and the connection of the shell 1 of the air-conditioning indoor unit is more stable.

The inside of the casing 1 is provided with a volute 4, and the volute 4 is a centrifugal volute 4. The front side of the volute 4 is provided with an outlet of the volute 4, the rear side of the volute 4 is provided with an inlet of the volute 4, and the inlet of the volute 4 and the outlet of the volute 4 form an air channel communicated with the air outlet 133; the air channel is a through-flow air channel, and a fan is arranged in the volute 4. The fans are cross-flow fans, at least one of which is arranged vertically and sequentially in the casing 1, and are used for introducing air from an air inlet 111 of the indoor unit of the air conditioner, flowing through an air duct and discharging the air from an air outlet 133. The cross-flow fan can be one or two or more, and one cross-flow fan is selected in the embodiment.

According to the indoor unit of the air conditioner in the embodiment of the present disclosure, the indoor heat exchanger 6 is disposed in the casing 1 between the air inlet 111 and the volute 4 corresponding to the air inlet 111, and the indoor heat exchanger 6 exchanges heat with air entering through the air inlet 111. The indoor heat exchanger 6 may include a refrigerant pipe through which refrigerant flows, and heat exchange fins connected to the refrigerant pipe so as to increase a heat exchange area.

The water pan 5 is connected below the indoor heat exchanger 6, and condensed water on the indoor heat exchanger 6 flows downwards into the water pan 5. The drain pipe (not shown) is connected to the water pan 5, and the condensed water in the water pan 5 is discharged through the drain pipe.

A boss part is arranged on the water receiving tray 5 and is arranged around the volute 4 partially. Indoor heat exchanger 6 is installed on boss portion, is favorable to the comdenstion water that indoor heat exchanger 6 went up to flow down can't accumulate on boss portion, and the comdenstion water overflows to water collector 5 from boss portion downwards in to the comdenstion water that has prevented that indoor heat exchanger 6 from going up to flow down is detained in indoor heat exchanger 6's bottom, and the comdenstion water of having avoided being detained contacts with indoor heat exchanger 6, blocks up and hinders heat transfer area, and then has improved indoor heat exchanger 6's heat exchange efficiency.

Panel seat 2 sets up inside casing 1, and the inside of panel seat 2 is cavity, is equipped with the screw hole on the roof 9, and roof 9 passes the screw hole through the fastener and comes fixed connection on the up end of panel seat 2.

The bottom surface of panel seat 2 is provided with a plurality of reference columns 21, and the middle part of every fixed column 112 all is provided with fastening groove 211, and wherein, the degree of depth direction of fastening groove 211 is the same with the length direction of reference column 21.

The base 3 defines the bottom structure of the air-conditioning indoor unit and is used for supporting the integral structure of the air-conditioning indoor unit, and the base 3 is connected to the bottom end of the panel seat 2. The base 3 is provided with a through hole 31 corresponding to the positioning column 21, and the positioning column 21 is inserted into the through hole 31 to perform installation and pre-positioning, so that the pre-installation and positioning are more convenient and faster. After pre-positioning, the panel base 2 and the base 3 are fixedly connected by the fasteners penetrating through the through holes 31 and the fastening grooves 211, so that the connection stability of the panel base 2 and the base 3 is enhanced. In this embodiment, the positioning columns 21 are preferably three, the positioning columns 21 are arranged at the bottom end of the panel base 2 at intervals, and the three positioning columns 21 and the three through holes 31 matched with the three positioning columns are used for three-point positioning, so that the material cost is saved, the connection convenience and the connection reliability of the mounting base and the panel base 2 are improved, and the base 3 and the panel base 2 can be mounted more conveniently and quickly.

Specifically, the base 3 is further provided with a fastening hole 32, the panel base 2 is provided with a long circular hole 22 corresponding to the fastening hole 32, and the long circular hole 22 extends in the vertical direction. Due to the arrangement of the long round holes 22, the base 3 and the panel base 2 can be more flexibly and adjustably mounted and matched, so that the mounting precision is improved, and the mounting convenience is enhanced.

The two opposite ends of the positioning column 21 are respectively a connecting end and a free end, the connecting end of the positioning column 21 is connected to the bottom surface of the panel base 2, the free end of the positioning column 21 is provided with a chamfer 7, and the chamfer 7 can facilitate guiding installation, so that the positioning column 21 can be more conveniently installed in the through hole 31. Furthermore, the through hole 31 is provided with a chamfer 7 to facilitate the installation of the positioning column 21 into the through hole 31, and the installation guidance is provided.

In order to enhance the structural strength of the through-hole 31, a plurality of reinforcing plates 311 are provided around the through-hole 31, and the reinforcing plates 311 have a rib structure, which is advantageous for enhancing the structural strength of the through-hole 31 and improving the supporting capability of the base 3. Further, the through-hole 31 is provided with an extension 312 extending in the axial direction thereof, and the extension 312 serves to further enhance the structural strength of the through-hole 31.

The lateral wall of panel seat 2 is close to air outlet 133 and sets up, is provided with a plurality of line draw-in grooves of walking on the inside wall of panel seat 2, will walk the line draw-in groove setting and be favorable to through walking the line draw-in groove with better fixing of electric circuit on the inside wall of panel seat 2, and then be favorable to preventing that electric circuit from exposing, convenient guide and fixed electric circuit walk the line.

Specifically, walk the line draw-in groove and include straight line draw-in groove 23 and commentaries on classics line draw-in groove 24, a plurality of straight line draw-in grooves 23 are vertical straight line and evenly arrange, are favorable to making electric circuit keep arranging in the same direction as straight, guarantee electric circuit's noncongestion, and straight line draw-in groove 23 is provided with simultaneously and does benefit to fixing on panel seat 2's inside wall better with electric circuit to prevent that electric circuit from exposing in the outside, avoided the unexpected damage electric circuit of user.

The structure of line rotating clamping groove 24 is the same as that of straight clamping groove 23, and line rotating clamping groove 24 is arranged in a staggered mode relative to straight clamping groove 23 in the vertical direction, so that the electric circuit is guaranteed to be smoother when the reversing is performed, and the bending damage of the wiring to the electric circuit during the reversing is reduced.

The rear panel 11 is configured as an arc-shaped plate in this embodiment, the rear panel 11 is provided with the air inlet 111, the bottom surface of the rear panel 11 is provided with a plurality of fixing posts 112 and a limiting groove 113, the middle portion of each fixing post 112 is provided with a fixing groove 1121, and the depth direction of the fixing groove 1121 is the same as the length direction of the fixing post 112.

The base 3 is also provided with a limiting hole 33 corresponding to the fixing column 112 and a limiting column 34 corresponding to the limiting groove 113, and the limiting hole 33 penetrates through the base 3. The fixing column 112 is inserted into the limiting hole 33 and the limiting column 34 is inserted into the limiting groove 113 to install pre-positioning, and then the fastener penetrates into the limiting hole 33 and the fixing groove 1121 to fixedly connect the rear panel 11 and the base 3, so that the connection mode is more favorable for enhancing the connection stability of the rear panel 11 and the base 3, and the quick and convenient installation of the rear panel 11 and the base 3 is facilitated. In this embodiment, the number of the fixing posts 112 is preferably three, the fixing posts 112 are spaced from each other on the bottom surface of the rear panel 11, and the three fixing posts 112 and the three limiting holes 33 matched with the three fixing posts 112 are positioned, so that the convenience and reliability of connection between the base 3 and the rear panel 11 are improved, and the base 3 and the rear panel 11 are more conveniently and quickly mounted. The two limiting grooves 113 are arranged symmetrically with respect to the center of the rear panel 11, so that the rear panel 11 and the base 3 are more stable after being installed.

Further, for the connection stability of reinforcing base 3 and rear panel 11, be connected with a plurality of lateral wall strengthening ribs 1122 with the periphery of fixed column 112, lateral wall strengthening rib 1122 is the floor structure, through setting up the structural strength of a plurality of lateral wall strengthening ribs 1122 with reinforcing fixed column 112. A plurality of groove wall reinforcing ribs 1131 are arranged at intervals on the inner side edge of each limiting groove 113, so that the connection gap between the limiting groove 113 and the limiting column 34 is smaller, and the connection tightness between the limiting groove 113 and the limiting column 34 is further enhanced.

The both ends that spacing post 34 is relative are the link of spacing post 34 and the free end of spacing post 34 respectively, and the link of spacing post 34 and the free end of spacing post 34 set up relatively, and the link of spacing post 34 is connected on base 3, and the free end of spacing post 34 is provided with chamfer 7 so that the installation direction to make spacing post 34 more be convenient for install to spacing groove 113 in. Further, limiting hole 33 is provided with chamfer 7 for limiting hole 33 has installation guidance, thereby being favorable for fixing column 112 to be installed in limiting hole 33, and then being more favorable for the assembly of rear panel 11 and base 3, and making the assembly of rear panel 11 and base 3 more convenient.

This embodiment still includes electrical apparatus box 8, and electrical apparatus box 8 is square box body, and its inside is provided with the drive plate. The electrical box 8 is provided with a wiring port 81, and an internal electrical circuit of the indoor unit of the air conditioner is connected into and out of the electrical box 8 at the wiring port 81.

The base 3 is provided with a first clamping groove part 35, a second clamping groove part 36 and a wiring groove 37, the first clamping groove part 35 is matched with the second clamping groove part 36 to clamp the electrical box 8 between the first clamping groove part 35 and the second clamping groove part 36, and the wiring groove 37 is arranged corresponding to the wiring opening 81. From this, this embodiment air conditioning indoor set carries on spacingly through first draw-in groove portion 35 and second draw-in groove portion 36 to the lower extreme of electrical apparatus box 8, has restricted the plane removal of electrical apparatus box 8, has realized accurate spacing effect, and trough 37 is favorable to developing base 3 space, improves the local space utilization on the base 3 to the mediation of the electric circuit of being convenient for makes the electric circuit can insert in electrical apparatus box 8 more conveniently.

Further, the first and second click groove portions 35 and 36 are provided on the left and right sides of the base 3, respectively. The first card slot portion 35 includes a first boss 351 and a first card slot 352, the first boss 351 is a block-shaped protrusion, and the first card slot 352 is disposed on a side of the first boss 351 close to the second card slot portion 36. The second slot portion 36 includes a second boss 361 and a second slot 362, the second boss 361 is a block-shaped protrusion, and the second slot 362 is disposed on the second boss 361 near the first slot portion 35. The lower end of the electrical box 8 is limited by the first clamping groove 352 and the second clamping groove 362, so that the plane movement of the electrical box 8 is limited. Second draw-in groove 362 and second draw-in groove 362 department all are provided with the screw hole, and the lower extreme of electrical apparatus box 8 corresponds first draw-in groove 352 and second draw-in groove 362 department and is provided with corresponding screw hole, passes the screw hole through the screw and fastens electrical apparatus box 8 on base 3 can improve the steadiness after the installation of electrical apparatus box 8.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the 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 air inlet is formed in the rear panel, a plurality of fixing columns and limiting grooves are formed in the bottom surface of the rear panel, and a fixing groove is formed in the middle of each fixing column; and

and the base is provided with a limiting hole/a limiting column corresponding to the fixing column/the limiting groove, the fixing column is inserted into the limiting hole, the limiting column is inserted into the limiting groove to be installed and positioned, and a fastener penetrates into the limiting hole and the fixing groove to fixedly connect the rear panel and the base.

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

the periphery of the fixing column is connected with a plurality of side wall reinforcing ribs.

3. An indoor unit of an air conditioner according to claim 1, wherein:

and a plurality of groove wall reinforcing ribs are arranged at the inner side edge of the limiting groove.

4. An indoor unit of an air conditioner according to claim 1, wherein:

and a chamfer is arranged at the position limiting hole.

5. An indoor unit of an air conditioner according to claim 1, wherein:

the limiting hole penetrates through the base.

6. An indoor unit of an air conditioner according to claim 1, wherein:

the connecting end of the limiting column and the free end of the limiting column are arranged oppositely, the connecting end of the limiting column is connected to the base, and the free end of the limiting column is provided with a chamfer.

7. An indoor unit of an air conditioner according to claim 1, wherein:

the two limiting grooves are symmetrically arranged relative to the center of the rear panel.

8. An indoor unit of an air conditioner according to claim 1, wherein:

the fixed columns are arranged in number of three, and the fixed columns are arranged on the bottom surface of the rear panel at intervals.

9. An indoor unit of an air conditioner according to claim 1, wherein:

the back panel is set to be an arc-shaped panel.

10. An indoor unit of an air conditioner according to claim 1, wherein:

the air conditioner indoor unit is characterized by further comprising a front panel and side panels, wherein the front panel is arranged on the front side of the air conditioner indoor unit, the side panels are respectively arranged on two sides of the air conditioner indoor unit, and the front panel, the side panels and the rear panel jointly form a shell.

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