Wall-mounted air conditioner indoor unit

By filling the same support block between the base and the middle frame of the wall-mounted air conditioner indoor unit, and using the extension to abut the electric control box or the outer side wall of the waterway, the deformation and damage caused by the mismatch between the middle frame and the base is solved, and more efficient protection and a simplified production and assembly process are achieved.

CN119573132AActive Publication Date: 2025-03-07NINGBO AUX ELECTRIC CO LTD +1
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Patent Information

Application Number
CN202311119033.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-08-31
Publication Date
2025-03-07
Estimated Expiration
2043-08-31

AI Technical Summary

Technical Problem

In existing wall-mounted air-conditioning indoor units, the middle frame does not match the base, resulting in the middle frame being easily deformed and damaged during handling and transportation.

Method used

A wall-mounted air conditioning indoor unit is designed, with a right support block between the right end of the base and the right side wall of the middle frame, and a left support block between the left end of the base and the left side wall of the middle frame, and the left support block is the same as the right support block. The support block can not only support the side wall of the middle frame, but also abut against the electric control box or the outer side wall of the waterway through the extension to increase the support area and improve the protection effect of the middle frame.

Benefits of technology

Effectively prevent the middle frame from deforming or damage during handling and transportation, while simplifying the design, production and assembly processes, improving assembly efficiency, and reducing noise generation.

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Abstract

The invention provides a wall-mounted air conditioner indoor unit, and relates to the technical field of air conditioners. The indoor unit comprises a base and a middle frame, the middle frame covers the base, the space between the right end of the base and the right side wall of the middle frame is filled with a right supporting block, the space between the left end of the base and the left side wall of the middle frame is filled with a left supporting block, and the left supporting block is the same as the right supporting block. According to the indoor unit, the right supporting block can support the right side wall of the middle frame, the left supporting block can support the left side wall of the middle frame, and therefore in the process of carrying and transporting the indoor unit, the middle frame is not prone to deformation or damage. Moreover, in the indoor unit, the left supporting block is the same as the right supporting block, so that only one part needs to be designed when parts are designed, and only one mold needs to be designed when a mold is designed; when the parts are manufactured, different production lines do not need to be arranged, and the situation of production redundancy of one part is avoided; when a product is assembled, the right supporting block and the left supporting block do not need to be used in pairs, and therefore assembly errors are not prone to occurring.
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Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a wall-mounted air conditioner indoor unit. Background Art

[0002] The wall-mounted air conditioner indoor unit includes a base and a middle frame, and the middle frame cover is arranged on the base. In the prior art, based on the same base, the design size of the middle frame is different due to different customer needs. It is found during handling and transportation that when the size of the middle frame is larger than the size of the base, for example, when the width of the middle frame in the left-right direction is larger than the width of the base, the middle frame is prone to deformation and damage. Summary of the invention

[0003] The object of the present invention is to provide a wall-mounted air conditioner indoor unit to solve the technical problems in the prior art that the middle frame does not match the base and the middle frame is easily deformed and damaged.

[0004] The wall-mounted air-conditioning indoor unit provided by the present invention comprises a base and a middle frame, wherein the middle frame cover is arranged on the base, a right support block is filled between the right end of the base and the right side wall of the middle frame, and a left support block is filled between the left end of the base and the left side wall of the middle frame, and the left support block is the same as the right support block.

[0005] The wall-mounted air conditioner indoor unit provided by the present invention can produce the following beneficial effects:

[0006] The wall-mounted air conditioner indoor unit provided by the present invention has a right support block filled between the right end of the base and the right side wall of the middle frame, and a left support block filled between the left end of the base and the left side wall of the middle frame, wherein the right support block can support the right side wall of the middle frame, and the left support block can support the left side wall of the middle frame, so that the middle frame is not easy to be deformed or damaged during the handling and transportation of the indoor unit. Moreover, in the indoor unit, the left support block is the same as the right support block. With such a configuration, when designing parts, only one part needs to be designed, and when designing molds, only one mold needs to be designed, which greatly simplifies the design work; when manufacturing parts, there is no need to open different production lines, the production is simple, the production process is greatly simplified, and there will be no redundant production of one of the parts; when assembling products, there is no need to pair the right support block and the left support block, so it is not easy to make assembly errors, which greatly simplifies the assembly process and is conducive to improving assembly efficiency.

[0007] Further, the right support block includes a first main body, the first main body is located between the right end of the base and the right side wall of the middle frame; the first main body is fixedly connected to a first extension, an electric control box is installed at the right end of the base or a right water channel is provided, the left side of the first extension can abut against the outer side wall of the electric control box or the right water channel, and the right side of the first extension abuts against the right side wall of the middle frame;

[0008] The left support block includes a second main body portion, which is located between the left end of the base and the left side wall of the middle frame; the second main body portion is fixedly connected to a second extension portion, and the left end of the base is provided with a left water channel or the electric control box is installed, the right side of the second extension portion can abut against the outer side wall of the left water channel or the electric control box, and the left side of the second extension portion abuts against the left side wall of the middle frame.

[0009] Under this technical scheme, in addition to being able to support between the right end of the base and the right side wall of the middle frame, the right support block can also, with the help of the first extension part, increase the support area of ​​the right side wall of the middle frame through the outer wall of the electric control box or the right water channel, thereby improving the support effect on the middle frame; and the left support block can not only be supported between the left end of the base and the left side wall of the middle frame, but also with the help of the second extension part, increase the support area of ​​the left side wall of the middle frame through the outer wall of the left water channel or the electric control box, thereby improving the support effect on the middle frame, that is, the middle frame, the base, and the electric control box can all lean against and support each other with the support blocks, so that, as a whole, all components are not easy to shake, and thus, are not easy to deform or damage; of course, the components are not easy to collide or rub against each other, so the setting of the support blocks can also effectively avoid the noise caused by collision or friction between the components.

[0010] Further, the rear end of the right side of the base has a first side wall, the first main body is arranged between the first side wall and the right side wall of the middle frame, and the first extension portion is extended forward;

[0011] And / or, the left rear end of the base has a second side wall, the second main body is arranged between the second side wall and the left side wall of the middle frame, and the second extension portion extends forward.

[0012] Under this technical solution, both the first side wall and the second side wall can structurally improve the strength of the rear end of the base, and can ensure the contact area between the right support block and the left support block and the base; when the indoor unit is subjected to external force, it can also effectively prevent the force transmitted from the support block to the base from causing damage to the structure or components inside the base, thereby playing a certain protective role.

[0013] Furthermore, the first extension portion is integrally formed with the first main body portion, and the second extension portion is integrally formed with the second main body portion.

[0014] Under this technical solution, the support block is an integrated structure with strong structural integrity and a small number of parts of the indoor unit, thereby simplifying the assembly process and helping to improve assembly efficiency.

[0015] Furthermore, the right support block and the left support block are both fixedly connected to at least one of the base and the middle frame.

[0016] Furthermore, the right support block and the left support block are both detachably fixedly connected to the middle frame.

[0017] Under this technical solution, during assembly, the right support block and the left support block are first installed to the middle frame respectively, and then the support block and the middle frame are assembled with the base. During the assembly process, the base and the support block may produce friction or collision, while the middle frame will not produce friction or collision with the support block, so this setting form can effectively protect the middle frame. The detachable connection method allows the support block to be suitable for different models, as long as the spacing between the end of the base and the inner wall of the middle frame matches the thickness of the support block; moreover, the same base can be combined with middle frames of different sizes by replacing support blocks of different thicknesses; the same middle frame can also be combined with bases of different sizes by replacing support blocks of different thicknesses, thereby facilitating the acquisition of indoor unit products of different sizes and specifications, and the diversity and flexibility of product sizes are better.

[0018] Furthermore, one of the right support block and the right side wall is provided with a buckle, and the other is provided with a slot, and the buckle is matched and engaged with the slot.

[0019] Under this technical solution, the support block is snap-fitted to the side wall of the middle frame, which makes assembly convenient and quick, and can ensure assembly efficiency.

[0020] Furthermore, one of the right support block and the right side wall is provided with an inserting plate, and the other is provided with a slot, and the inserting plate is matched and plugged into the slot.

[0021] Under this technical solution, the cooperation between the plug board and the slot can limit the support block, which helps to connect the support block and the middle frame more accurately and quickly.

[0022] Furthermore, the number of the plug plates and the number of the buckles are both multiple, and the plug plates and the buckles are alternately arranged along the up and down directions.

[0023] Under this technical solution, the connection between the support block and the middle frame is more secure along the up and down directions, and the position stability of the support block is better, so that the supporting function can be better played.

[0024] Furthermore, along the front-to-back direction, the plug plates are arranged in a triangle.

[0025] Under this technical solution, the connection between the support block and the middle frame along the front-to-back direction is also more secure, which can further improve the position stability of the support block. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a partial three-dimensional structure of a wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0028] Figure 2 A partial rear view structural diagram of a wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0029] Figure 3 One of the partial assembly structure schematic diagrams of the wall-mounted air conditioner indoor unit provided by the embodiment of the present invention, which includes a base and an electric control box;

[0030] Figure 4 The second schematic diagram of the partial assembly structure of the wall-mounted air conditioner indoor unit provided by the embodiment of the present invention, which includes a base and an electric control box;

[0031] Figure 5 One of the structural schematic diagrams of the middle frame of the wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0032] Figure 6 A second structural schematic diagram of a middle frame of a wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0033] Figure 7 One of the structural schematic diagrams of the support block of the wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0034] Figure 8 A second structural schematic diagram of a support block of a wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0035] Fig. 9 The third schematic diagram of the partial assembly structure of the wall-mounted air conditioner indoor unit provided by the embodiment of the present invention includes a base, an electric control box and a support block;

[0036] Fig.10 A fourth schematic diagram of a partial assembly structure of a wall-mounted air conditioner indoor unit provided by an embodiment of the present invention, which includes a base, an electric control box and a support block;

[0037] Fig.11 One of the schematic diagrams of the assembly process of the middle frame and the support block of the wall-mounted air conditioner indoor unit provided by the embodiment of the present invention;

[0038] Fig.12A second schematic diagram of the assembly process of the middle frame and the support block of the wall-mounted air conditioner indoor unit provided by an embodiment of the present invention;

[0039] Fig.13 One of the schematic diagrams of the assembly structure of the middle frame and the support block of the wall-mounted air conditioner indoor unit provided by the embodiment of the present invention;

[0040] Fig.14 The second schematic diagram of the assembly structure of the middle frame and the support block of the wall-mounted air-conditioning indoor unit provided in the embodiment of the present invention.

[0041] Description of reference numerals:

[0042] 100-base; 110-first side wall; 120-second side wall; 130-outer side wall; 140-left water channel;

[0043] 200-middle frame; 210-right side wall; 220-left side wall; 201-card slot; 202-slot;

[0044] 300-right support block; 301-buckle; 302-insertion board; 310-first main body; 320-first extension part;

[0045] 400-left supporting block; 410-second main body; 420-second extension;

[0046] 500-Electrical control box. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] First of all, it should be explained that in the drawings of the present application, the direction indicated by the arrow "ab" is the left-right direction, that is, the width direction of the wall-mounted air-conditioning indoor unit; the direction indicated by the arrow "cd" is the front-back direction, that is, the thickness direction of the wall-mounted air-conditioning indoor unit; the direction indicated by the arrow "ef" is the up-down direction, that is, the height direction of the wall-mounted air-conditioning indoor unit.

[0049] This embodiment provides a wall-mounted air conditioner indoor unit, such as Figure 1 and Figure 2 As shown, the wall-mounted air-conditioning indoor unit includes a base 100 and a middle frame 200. The middle frame 200 is covered on the base 100. A right support block 300 is filled between the right end of the base 100 and the right side wall 210 of the middle frame 200. A left support block 400 is filled between the left end of the base 100 and the left side wall 220 of the middle frame 200. The left support block 400 is the same as the right support block 300.

[0050] The wall-mounted air-conditioning indoor unit provided in this embodiment has a right support block 300 filled between the right end of the base 100 and the right side wall 210 of the middle frame 200, and a left support block 400 filled between the left end of the base 100 and the left side wall 220 of the middle frame 200, wherein the right support block 300 can support the right side wall 210 of the middle frame 200, and the left support block 400 can support the left side wall 220 of the middle frame 200, so that during the process of carrying and transporting the indoor unit, the middle frame 200 is not easily deformed or damaged. Moreover, in the wall-mounted air-conditioning indoor unit provided in this embodiment, the left support block 400 is the same as the right support block 300. With such an arrangement, when designing a part, only one part needs to be designed, and when designing a mold, only one mold needs to be designed, which greatly simplifies the design work; when manufacturing parts, there is no need to open different production lines, production is simple, the production process is greatly simplified, and there will be no situation where one of the parts is produced redundantly; when assembling the product, there is no need to pair the right support block 300 and the left support block 400, so assembly errors are not likely to occur, which greatly simplifies the assembly process and is conducive to improving assembly efficiency.

[0051] Specifically, in this embodiment, Figure 3 and Figure 4 as well as Figures 7 to 10As shown, the right support block 300 includes a first main body 310, which is located between the right end of the base 100 and the right side wall 210 of the middle frame 200; the first main body 310 is fixedly connected with a first extension part 320, and an electric control box 500 is installed at the right end of the base 100. The left side of the first extension part 320 can abut against the electric control box 500, and the right side of the first extension part 320 abuts against the right side wall 210 of the middle frame 200; the left support block 400 includes a second main body 410, which is located between the left end of the base 100 and the left side wall 220 of the middle frame 200; the second main body 410 is fixedly connected with a second extension part 420, and a left water channel 140 is provided at the left end of the base 100. The right side of the second extension part 420 can abut against the outer side wall of the left water channel 140, and the left side of the second extension part 420 abuts against the left side wall 220 of the middle frame 200. In this arrangement, the right support block 300 can be supported between the right end of the base 100 and the right side wall 210 of the middle frame 200, and can also increase the support area of ​​the right side wall 210 of the middle frame 200 through the electric control box 500 with the help of the first extension part 320, thereby improving the support effect of the middle frame 200; and the left support block 400 can be supported between the left end of the base 100 and the left side wall 220 of the middle frame 200, and can also increase the support area of ​​the right side wall 210 of the middle frame 200 through the electric control box 500 with the help of the first extension part 320, thereby improving the support effect of the middle frame 200; The outer wall 130 of 140 increases the supporting area of ​​the left side wall 220 of the center frame 200, and improves the supporting effect of the center frame 200, that is, the center frame 200, the base 100, and the electric control box 500 can all lean against and support each other with the support block, so that the components as a whole are not easy to shake, and are not easy to deform or damage; of course, the components are not easy to collide or rub against each other, so the setting of the support block can also effectively avoid the noise generated by the collision or friction between the components.

[0052] It should be noted here that in other embodiments of the present application, a right water channel may also be provided at the right end of the base 100, and the electric control box 500 is installed at the left end of the base 100. Under this arrangement, the first extension portion 320 of the right support block 300 abuts against the outer wall of the right water channel, and the second extension portion 420 of the left support block 400 abuts against the electric control box 500.

[0053] Specifically, in this embodiment, Figure 3 and Figure 4As shown, the right rear end of the base 100 has a first side wall 110, the first main body 310 is arranged between the first side wall 110 and the right side wall 210 of the middle frame 200, and the first extension 320 is extended forward; the left rear end of the base 100 has a second side wall 120, the second main body 410 is arranged between the second side wall 120 and the left side wall 220 of the middle frame 200, and the second extension 420 is extended forward. Under this arrangement, both the first side wall 110 and the second side wall 120 can improve the strength of the rear end of the base 100 in terms of structure, and can ensure the contact area between the right support block 300 and the left support block 400 and the base 100; when the indoor unit is subjected to external force, it can also effectively prevent the force transmitted from the support block to the base 100 from causing damage to the structure or components in the base 100, and play a certain protective role.

[0054] Of course, in other embodiments of the present application, the rear end of the base 100 may be provided with only the first side wall 110, and the left support block 400 abuts against other structures at the left end of the base 100; or, the rear end of the base 100 may be provided with only the second side wall 120, and the right support block 300 abuts against other structures at the right end of the base 100. In addition, it should be noted that, although in this embodiment, the right support block 300 and the left support block 400 are both located at the rear end of the indoor unit, in other embodiments of the present application, the arrangement of the right support block 300 and the left support block 400 is not limited to the above positions, for example, both may also be arranged in the middle of the indoor unit along the front-to-back direction, as long as they can play a supporting role.

[0055] Specifically, in this embodiment, Figure 3 and Figure 4 As shown, the outer side wall 130 of the left water channel 140 is connected to the second side wall 120. With this arrangement, the structural strength of the left end of the base 100 is further improved.

[0056] Specifically, in this embodiment, Figure 7 and Figure 8 As shown, the first extension part 320 is integrally formed with the first main body part 310, and the second extension part 420 is integrally formed with the second main body part 410. That is, the support block is an integral structure. In this way, the support block structure has a strong integrity, the number of parts of the indoor unit is small, and the assembly process is simple, which is conducive to improving assembly efficiency.

[0057] It should be noted here that in other embodiments of the present application, the support block may also be a split structure, for example: the first main body portion 310 and the first extension portion 320 are two independent structures, which are fixedly connected to form the right support block 300.

[0058] Specifically, in this embodiment, Figure 7 and Figure 8As shown, the right support block 300 is substantially in a “T” shape, and the first extension portion 320 is disposed toward one end of the first main body portion 310 .

[0059] Specifically, in this embodiment, Figures 11 to 14 As shown, the right support block 300 and the left support block 400 are both fixedly connected to the middle frame 200. In this arrangement, during assembly, the right support block 300 and the left support block 400 are first installed to the middle frame 200, respectively, and then the support block and the middle frame 200 are assembled with the base 100. During the assembly process, the base 100 and the support block may generate friction or collision, while the middle frame 200 will not generate friction or collision with the support block, so this arrangement can effectively protect the middle frame 200.

[0060] It should be noted that in other embodiments of the present application, both the right support block 300 and the left support block 400 may be fixedly connected to the base 100; or, one of the right support block 300 and the left support block 400 may be fixedly connected to the middle frame 200, while the other may be fixedly connected to the base 100; or, one or both of the right support block 300 and the left support block 400 may be connected to both the middle frame 200 and the base 100. That is, as long as the right support block 300 and the left support block 400 can be fixed so that both can play their supporting role, the present application may not limit the specific fixed positions of the right support block 300 and the left support block 400.

[0061] Specifically, in this embodiment, the right support block 300 and the left support block 400 are both detachably fixedly connected to the middle frame 200. Such a configuration allows the support block to be applicable to different models, as long as the spacing between the end of the base 100 and the inner wall of the middle frame 200 matches the thickness of the support block; moreover, the same base 100 can be combined with middle frames 200 of different sizes by replacing support blocks of different thicknesses; the same middle frame 200 can also be combined with bases 100 of different sizes by replacing support blocks of different thicknesses, thereby facilitating the acquisition of indoor unit products of different sizes and specifications, and the diversity and flexibility of product sizes are better.

[0062] Specifically, in this embodiment, Figure 5 , Figure 6 and Figure 8 As shown, the right support block 300 is provided with a buckle 301, and the right side wall 210 of the middle frame 200 is provided with a slot 201, and the buckle 301 is matched with the slot 201 for snap connection. The snap connection method is convenient and fast during assembly, and can ensure assembly efficiency. Of course, in other embodiments of the present application, the buckle 301 can also be set on the right side wall 210 of the middle frame 200, and the slot 201 is set on the right support block 300.

[0063] Specifically, in this embodiment, continue as Figure 5 , Figure 6 and Figure 8 As shown, the right support block 300 is provided with an insert plate 302, and the right side wall 210 of the middle frame 200 is provided with a slot 202, and the insert plate 302 is matched and plugged into the slot 202. In this arrangement, the cooperation between the insert plate 302 and the slot 202 can limit the support block, which helps the support block to be connected to the middle frame 200 more accurately and quickly. Of course, in other embodiments of the present application, the insert plate 302 can also be set on the right side wall 210 of the middle frame 200, and correspondingly, the slot 202 is set on the right support block 300.

[0064] Specifically, in this embodiment, the number of the plug plates 302 and the buckles 301 are both multiple, and the plug plates 302 and the buckles 301 are alternately arranged in the up-down direction; the slots 202 are arranged correspondingly to the plug plates 302, and the card slots 201 are arranged correspondingly to the buckles 301. With such an arrangement, the connection between the support block and the middle frame 200 in the up-down direction is more secure, and the position stability of the support block is better, so that the support function can be better exerted.

[0065] Specifically, in this embodiment, the plug plates 302 are arranged in a triangle along the front-to-back direction. With this arrangement, the connection between the support block and the middle frame 200 along the front-to-back direction is also more secure, which can further improve the position stability of the support block.

[0066] More specifically, in this embodiment, if Figure 8 As shown, there are two buckles 301 and three plug boards 302. Of course, in other embodiments of the present application, the number of buckles 301 and plug boards 302 is not limited thereto, as long as the support block and the middle frame 200 can be firmly connected.

[0067] It should also be noted that since the left support block 400 is the same as the right support block 300, the structure on the left side wall 220 of the middle frame 200 that cooperates with the left support block 400 is also the same as the structure on the right side wall 210 of the middle frame 200 that cooperates with the right support block 300, and will not be repeated here. The difference is that since the positional relationship between the left support block 400 and the right support block 300 is relative and inverted to each other, the structure on the left side wall 220 of the middle frame 200 and the structure on the right side wall 210 are also relative and inverted to each other.

[0068] Finally, it should be noted that, in this article, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that: The invention comprises a base (100) and a middle frame (200), wherein the middle frame (200) is covered on the base (100), a right support block (300) is filled between the right end of the base (100) and the right side wall (210) of the middle frame (200), and a left support block (400) is filled between the left end of the base (100) and the left side wall (220) of the middle frame (200), and the left support block (400) is the same as the right support block (300).

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that: The right supporting block (300) comprises a first main body (310), the first main body (310) being located between the right end of the base (100) and the right side wall (210) of the middle frame (200); the first main body (310) is fixedly connected with a first extension part (320), an electric control box (500) is installed at the right end of the base (100) or a right water channel is provided, the left side of the first extension part (320) can abut against the outer side wall of the electric control box (500) or the right water channel, and the right side of the first extension part (320) abuts against the right side wall (210) of the middle frame (200); The left supporting block (400) comprises a second main body (410), and the second main body (410) is located between the left end of the base (100) and the left side wall (220) of the middle frame (200); the second main body (410) is fixedly connected with a second extension part (420), and the left end of the base (100) is provided with a left water channel (140) or the electric control box (500) is installed, and the right side of the second extension part (420) can abut against the outer side wall of the left water channel (140) or the electric control box (500), and the left side of the second extension part (420) abuts against the left side wall (220) of the middle frame (200).

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that: The right rear end of the base (100) has a first side wall (110), the first main body (310) is arranged between the first side wall (110) and the right side wall (210) of the middle frame (200), and the first extension part (320) is extended forward; And / or, the left rear end of the base (100) has a second side wall (120), the second main body (410) is arranged between the second side wall (120) and the left side wall (220) of the middle frame (200), and the second extension part (420) is extended forward.

4. The wall-mounted air conditioner indoor unit according to claim 2 or 3, characterized in that: The first extension portion (320) is integrally formed with the first main body portion (310), and the second extension portion (420) is integrally formed with the second main body portion (410).

5. The wall-mounted air conditioner indoor unit according to any one of claims 1 to 3, characterized in that: The right support block (300) and the left support block (400) are both fixedly connected to at least one of the base (100) and the middle frame (200).

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that: The right support block (300) and the left support block (400) are both detachably fixedly connected to the middle frame (200).

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that: One of the right support block (300) and the right side wall (210) is provided with a buckle (301), and the other is provided with a slot (201), and the buckle (301) is matched and snap-connected with the slot (201).

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that: One of the right support block (300) and the right side wall (210) is provided with an inserting plate (302), and the other is provided with a slot (202), and the inserting plate (302) is matched and plugged with the slot (202).

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that: The number of the inserting plates (302) and the number of the buckles (301) are both plural, and the inserting plates (302) and the buckles (301) are arranged alternately in the up-down direction.

10. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that: Along the front-to-back direction, the inserting plates (302) are arranged in a triangle.

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