Indoor unit shell and duct type air conditioner

Abstract

The embodiment of the utility model provides an indoor unit shell and a duct type air conditioner, the indoor unit shell comprises a main shell, the main shell is provided with a containing cavity, an opening part and a first buckle part, the opening part is formed in the peripheral wall of the main shell and communicates with the containing cavity, and the first buckle part is arranged below the opening part; the sealing plate is sequentially provided with a handle part and a second buckle part at intervals in the vertical direction, the first buckle part and the second buckle part are connected in a buckled mode so that the sealing plate can cover the opening part to seal the containing cavity, and the handle part is located on the surface of the side, away from the containing cavity, of the sealing plate.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an indoor unit housing and an air duct machine. Background Art

[0002] In the related art, a sealing plate is usually provided at the opening of the air duct machine housing to close the opening. When internal components such as a water pump need to be installed or maintained, the sealing plate can be installed and removed. The installation and removal operation of the sealing plate in the related art is relatively inconvenient, and the air duct machine usually needs to be installed in a ceiling and is located at a relatively high position, which further exacerbates the problem of inconvenient installation and removal. Utility Model Content

[0003] An embodiment of this application provides an indoor unit housing and an air duct machine, which can reduce the installation and removal difficulty of the sealing plate and improve the convenience of installing and removing the sealing plate.

[0004] On the one hand, an embodiment of this application provides an indoor unit housing, including: a main housing, provided with a receiving cavity, an opening part, and a first buckle part, the opening part is formed on the peripheral wall of the main housing and communicates with the receiving cavity, and the first buckle part is arranged below the opening part; a sealing plate, which is sequentially provided with a handle part and a second buckle part at intervals in the up and down direction, the first buckle part and the second buckle part are buckled and connected so that the sealing plate covers the opening part to close the receiving cavity, and the handle part is located on the surface of the sealing plate away from the receiving cavity.

[0005] In some embodiments, the sealing plate has a first side surface and a second side surface arranged opposite to each other, a water pump installation part is provided on the first side surface, and the handle part is provided on the second side surface; when the sealing plate covers the opening part, the first side surface faces the receiving cavity, and the second side surface faces away from the receiving cavity.

[0006] In some embodiments, the handle part is a folded edge part formed at the top of the sealing plate; and / or, the second buckle part is a folded edge part formed at the bottom of the sealing plate.

[0007] In some embodiments, the indoor unit housing further includes an observation window cover, an observation window is provided on the sealing plate, the observation window cover is detachably covered at the observation window, and the observation window is used to observe the condensate water level in the indoor unit housing.

[0008] In some embodiments, a first avoidance notch is formed by the edge of the observation window being recessed; the observation window cover includes a cover plate portion and a plug-in portion, the plug-in portion is formed on one side surface of the cover plate portion, and a first flange is provided at one end of the peripheral wall of the plug-in portion away from the cover plate portion, and the first flange and the cover plate portion are spaced apart to form a first limiting groove; when the first avoidance notch is aligned with the first flange, the plug-in portion can be inserted into the observation window so that the cover plate portion abuts against the side surface of the sealing plate away from the handle portion, or withdrawn from the observation window so that the cover plate portion is separated from the side surface of the sealing plate away from the handle portion; when the plug-in portion is inserted into the observation window and the cover plate portion abuts against the side surface of the sealing plate away from the handle portion, the observation window cover can be rotated to insert or separate the edge of the observation window and the first limiting groove, so that the first avoidance notch and the first flange are aligned or misaligned.

[0009] In some embodiments, a first limiting protrusion is provided on the side surface of the sealing plate away from the handle portion. When the plug-in portion is inserted into the observation window and the cover plate portion abuts against the side surface of the sealing plate away from the handle portion, the observation window cover can be rotated to snap the first limiting protrusion into the first limiting groove or disengage from the first limiting groove. When the first limiting protrusion is snapped into the first limiting groove, the observation window cover and the sealing plate are kept fixed.

[0010] In some embodiments, a first notch is provided at the edge of the opening portion, and a second notch is provided at the edge of the sealing plate; when the sealing plate covers the opening portion, the first notch and the second notch are connected to form a pipeline installation hole.

[0011] In some embodiments, a water outlet pipe hole is provided on the sealing plate, and the water outlet pipe hole is used for passing through a water outlet pipe; the water outlet pipe includes a pipe body and a flange ring provided on the outer peripheral wall of the pipe body. One end of the pipe body passes through the water outlet pipe hole, and the flange ring abuts against the side surface of the sealing plate away from the handle portion.

[0012] In some embodiments, the edge of the water outlet pipe hole is recessed to form a second avoidance gap; a second flange is provided on the peripheral wall of the pipe body, and the second flange and the flange ring are spaced apart along the extension direction of the pipe body to form a second limiting groove; when the second avoidance gap and the second flange are aligned, the pipe body can be inserted into the water outlet pipe hole so that the flange ring and the side surface of the sealing plate away from the handle portion abut against each other, or withdrawn from the water outlet pipe hole so that the flange ring and the side surface of the sealing plate away from the handle portion are separated; when the pipe body is inserted into the water outlet pipe hole and the flange ring and the side surface of the sealing plate away from the handle portion abut against each other, the water outlet pipe can be rotatably connected to connect or separate the edge of the water outlet pipe hole and the second limiting groove so that the second avoidance gap and the second flange are aligned or staggered.

[0013] On the other hand, an embodiment of the present application provides a duct unit, comprising an indoor unit housing provided by any of the above embodiments.

[0014] The embodiment of the present application, by providing a first snap portion, a second snap portion and a handle portion, can utilize the snap connection relationship between the first snap portion and the second snap portion to enable the closing plate and the main shell to be autonomously and reliably positioned and connected before being fastened by fasteners and after the fasteners are removed, without the need for manual support and limiting by an operator, and during assembly and disassembly, the first snap portion and the second snap portion can be disengaged or separated by lifting the handle portion, thereby reducing the difficulty of assembly and disassembly of the closing plate and improving the convenience of assembly and disassembly of the closing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is an axonometric structural diagram of an indoor unit housing provided in some embodiments of the present application;

[0017] Figure 2 is an axonometric structural diagram of a sealing plate of an indoor unit housing provided in some embodiments of the present application;

[0018] Figure 3 is a projection structure diagram of an indoor unit housing provided in some embodiments of the present application;

[0019] Figure 4 is an axonometric structural diagram of an observation window cover of an indoor unit housing provided in some embodiments of the present application;

[0020] Figure 5It is an axonometric structure diagram of the water outlet pipe of the indoor unit housing provided by some embodiments of the present application.

[0021] Description of main component symbols:

[0022] 1 - Indoor unit housing, 10 - Main housing, 11 - Accommodation cavity, 12 - Opening, 13 - First buckle part, 14 - First notch, 20 - Sealing plate, 21 - First side surface, 211 - Water pump installation part, 212 - First limiting projection part, 213 - Second limiting projection part, 22 - Second side surface, 221 - Handle part, 23 - Second buckle part, 24 - Observation window, 241 - First avoidance notch, 25 - Second notch, 26 - Water outlet pipe hole, 261 - Second avoidance notch, 30 - Observation window cover, 31 - Cover plate part, 32 - Insertion part, 321 - First flange, 33 - First limiting groove, 34 - Limiting retaining wall, 40 - Pipeline installation hole, 2 - Water pump, 3 - Water outlet pipe, 301 - Pipe body, 302 - Flange ring, 3021 - Second flange, 303 - Second limiting groove. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0025] "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0026] In this application, the use of "suitable for" or "configured to" means open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. Additionally, the use of "based on" means open and inclusive because a process, step, calculation, or other action "based on" one or more of the stated conditions or values can in practice be based on additional conditions or values beyond those stated.

[0027] In this application, the term "exemplary" is used to mean "serving as an example, instance, or illustration". Any embodiment described as "exemplary" in this application is not necessarily to be construed as more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. In the following description, details are set forth for the purpose of explanation. It should be understood that those of ordinary skill in the art can recognize that this application can be implemented without these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of this application with unnecessary details. Therefore, this application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0028] As Figures 1 to 3 shown, on the one hand, an embodiment of this application provides an indoor unit housing 1, which includes a main housing 10 and a sealing plate 20, and can reduce the difficulty of installing and disassembling the sealing plate 20 and improve the convenience of installing and disassembling the sealing plate 20. Here, the indoor unit housing 1 can be, for example, the indoor unit housing 1 structure of different types of air conditioners such as duct machines, and the embodiments of this application do not limit this.

[0029] The main housing 10 is provided with a receiving cavity 11, an opening 12, and a first fastening portion 13. The receiving cavity 11 can be used to receive internal components such as an indoor heat exchanger and an indoor fan. The opening 12 is formed on the peripheral wall of the main housing 10 and communicates with the receiving cavity 11, and the first fastening portion 13 is provided below the opening 12. Here, the main housing 10 can include a top wall, a bottom wall, and a peripheral wall. The top wall and the bottom wall of the main housing 10 are disposed opposite to each other in the up-down direction, and the peripheral wall of the main housing 10 connects the top wall and the bottom wall; thus, the opening 12 is opened in the horizontal direction or a substantially horizontal direction.

[0030] The sealing plate 20 is sequentially and spaced apart in the up-down direction with a handle portion 221 and a second fastening portion 23 provided thereon, such that the handle portion 221 is located above the second fastening portion 23. The first fastening portion 13 and the second fastening portion 23 are fastened and connected to cover the sealing plate 20 on the opening 12 to close the receiving cavity 11; when the sealing plate 20 is covered on the opening 12, the handle portion 221 is located on the surface of the sealing plate 20 away from the receiving cavity 11. One of the first fastening portion 13 and the second fastening portion 23 can be a male fastening portion, and the other can be a female fastening portion.

[0031] When the cover plate 20 needs to be installed, the lifting handle part 221 can be lifted first to make the first buckle part 13 and the second buckle part 23 be buckled and connected, so that the cover plate 20 is preliminarily fixed on the main housing 10 and arranged corresponding to the opening part 12, without the operator manually supporting the cover plate 20. Subsequently, fasteners such as screws and pins can be used to firmly fix the cover plate 20 and the main housing 10 without support. When the cover plate 20 needs to be disassembled, the fasteners such as screws and pins can be disassembled first. At this time, the cover plate 20 can still be autonomously and reliably held on the main housing 10 under the action of the buckle connection between the first buckle part 13 and the second buckle part 23, without the operator manually supporting the cover plate 20. Subsequently, the operator can lift the lifting handle part 221 to separate the first buckle part 13 and the second buckle part 23, and further completely separate the cover plate 20 and the main housing 10 to achieve the disassembly purpose.

[0032] Compared with the related art, the indoor unit housing 1 provided by the embodiment of the present application can utilize the buckle connection relationship between the first buckle part 13 and the second buckle part 23 to realize the autonomous and reliable positioning connection between the cover plate 20 and the main housing 10 before being fastened by fasteners and after the fasteners are disassembled, without the operator manually supporting and limiting. And when assembling and disassembling, the first buckle part 13 and the second buckle part 23 can be separated and clamped or separated by lifting the lifting handle part 221, thereby reducing the assembly and disassembly difficulty of the cover plate 20 and improving the assembly and disassembly convenience of the cover plate 20.

[0033] In some embodiments, the cover plate 20 may have a first side surface 21 and a second side surface 22 arranged oppositely. A water pump mounting part 211 for mounting the water pump 2 may be provided on the first side surface 21, and a handle part 221 may be provided on the second side surface 22. When the cover plate 20 is covered on the opening part 12, the first side surface 21 faces the accommodation cavity 11, and the second side surface 22 faces away from the accommodation cavity 11. In this way, in addition to being used to close or expose the opening part 12, the cover plate 20 can also be used to mount the water pump 2, increasing the use function of the cover plate 20.

[0034] The structural type of the handle part 221 can be determined according to actual needs, and the embodiment of the present application does not limit this. In some embodiments, the handle part 221 may be a folded edge part formed at the top of the cover plate 20, which can be formed by bending the top of the cover plate 20; in other embodiments, the handle part 221 can be fixed to the cover plate 20 by a welding process or a threaded connection structure after being separately manufactured and formed.

[0035] The structural type of the second buckle portion 23 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the second buckle portion 23 can be a flanging portion formed at the bottom of the sealing plate 20, which can be formed by bending the top of the sealing plate 20. For example, it can be bent from the second side surface 22 to the first side surface 21; in other embodiments, the second buckle portion 23 can be fixed to the sealing plate 20 by a welding process or a threaded connection structure after being separately manufactured and formed.

[0036] As Figures 1 to 4 shown, in some embodiments, an observation window 24 can be provided on the sealing plate 20. The observation window 24 is used to observe the condensate water level inside the indoor unit housing 1. The indoor unit housing 1 can further include an observation window 24 cover, which is detachably covered at the observation window 24 for closing or opening the observation window 24. In this way, when the air conditioner such as a duct machine where the indoor unit housing 1 is located fails and stops running, the observation window 24 cover can be removed to open the observation window 24, and the condensate water level inside the indoor unit housing 1 can be observed through the observation window 24 to determine whether it is normal. Further, if it is determined that the condensate water level inside the indoor unit housing 1 is abnormally high, the water pump 2 inside the indoor unit housing 1 can be controlled to drain water so that the condensate water level returns to the normal height; if it is determined that the condensate water level inside the indoor unit housing 1 is not abnormal, the sealing plate 20 can be disassembled to check the components inside the indoor unit housing 1 to determine the cause of the failure. By providing the observation window 24, when the air conditioner such as a duct machine where the indoor unit housing 1 is located fails and stops running, observation can be carried out first, without directly disassembling the sealing plate 20 and the water pump 2 that may be installed on the sealing plate 20, reducing the disassembly and assembly operation burden.

[0037] In some examples, the edge of the observation window 24 can be recessed to form a first avoidance notch 241. The observation window 24 cover can include a cover plate portion 31 and a plug-in portion 32. The plug-in portion 32 is formed on one side surface of the cover plate portion 31. A first flange 321 is provided at one end of the peripheral wall of the plug-in portion 32 away from the cover plate portion 31. The first flange 321 and the cover plate portion 31 are spaced apart to form a first limiting groove 33. When the first avoidance notch 241 and the first flange 321 are aligned, the plug-in portion 32 can be inserted into the observation window 24 so that the cover plate portion 31 abuts against the first side surface 21, which is the side surface of the sealing plate 20 away from the handle portion 221, or withdrawn from the observation window 24 so that the cover plate portion 31 is separated from the first side surface 21; when the plug-in portion 32 is inserted into the observation window 24 and the cover plate portion 31 abuts against the first side surface 21, the observation window 24 cover can be rotated to insert or separate the edge of the observation window 24 and the first limiting groove 33, so that the first avoidance notch 241 and the first flange 321 are aligned or staggered.

[0038] In this way, when it is necessary to install the observation window 24 cover at the observation window 24, the first avoidance notch 241 and the first flange 321 can be aligned first, and then the insertion part 32 is inserted into the observation window 24 until the cover plate part 31 abuts against the first side surface 21. Subsequently, the observation window 24 cover can be rotated to adjust the relative angle between the observation window 24 cover and the observation window 24, so that the edge of the observation window 24 is embedded in the first limiting groove 33, and the first avoidance notch 241 and the first flange 321 are staggered. In this way, through the insertion and limiting relationship between the edge of the observation window 24 and the first limiting groove 33, the separation of the observation window 24 cover along the axial direction of the observation window 24 can be prevented, and the limiting of the observation window 24 cover and the sealing plate 20 along the axial direction of the observation window 24 is realized.

[0039] On the contrary, when it is necessary to remove the observation window 24 cover from the observation window 24, the observation window 24 cover can be rotated to adjust the relative angle between the observation window 24 cover and the observation window 24, so that the edge of the observation window 24 is separated from the first limiting groove 33 and the first avoidance notch 241 and the first flange 321 are aligned, and accordingly, the limiting effect on the observation window 24 cover and the sealing plate 20 along the axial direction of the observation window 24 is released, so that the observation window 24 cover can exit the observation window 24 along the axial direction of the observation window 24.

[0040] Exemplarily, a first limiting protrusion 212 can be provided on the first side surface 21 of the sealing plate 20, which is the side surface far from the handle part 221. When the insertion part 32 is inserted into the observation window 24 and the cover plate part 31 abuts against the first side surface 21, the observation window 24 cover can be rotated to make the first limiting protrusion 212 snap into or disengage from the first limiting groove 33. When the first limiting protrusion 212 snaps into the first limiting groove 33, the observation window 24 cover and the sealing plate 20 are kept fixed.

[0041] When it is necessary to install the observation window 24 cover at the observation window 24, after the edge of the observation window 24 is embedded in the first limiting groove 33, the observation window 24 cover can be rotated further until the first limiting protrusion 212 snaps into the first limiting groove 33. By using the clamping relationship between the first limiting protrusion 212 and the first limiting groove 33, the continuous rotation of the observation window 24 cover can be blocked, and the circumferential limiting of the observation window 24 cover and the sealing plate 20 along the rotation direction of the observation window 24 cover is realized.

[0042] On the contrary, when it is necessary to remove the observation window 24 cover from the observation window 24, a rotational driving force can be applied to the observation window 24 cover to overcome the clamping and limiting force between the first limiting protrusion 212 and the first limiting groove 33, and the observation window 24 cover is driven to rotate so that the first limiting protrusion 212 disengages from the first limiting groove 33, thereby releasing the circumferential limit between the observation window 24 cover and the sealing plate 20, so that the observation window 24 cover can be further rotated to the position where the first avoidance notch 241 and the first flange 321 are aligned.

[0043] Exemplarily, the observation window 24 cover further includes a limiting stop wall 34 for closing one end opening of the first limiting groove 33. Exemplarily, the limiting stop wall 34 can connect the first flange 321 and the cover plate portion 31.

[0044] In some embodiments, a first notch 14 may be provided at the edge of the opening portion 12, and a second notch 25 may be provided at the edge of the sealing plate 20; when the sealing plate 20 is covered on the opening portion 12, the first notch 14 and the second notch 25 are connected to form a pipeline installation hole 40. The shapes of the first notch 14 and the second notch 25 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some examples, the first notch 14 and the second notch 25 may be semi-circular notches respectively, and form a circular pipeline installation hole 40 after connection.

[0045] In some embodiments, a water outlet pipe hole 26 may be provided on the sealing plate 20 for passing through the water outlet pipe 3. The water outlet pipe 3 includes a pipe body 301 and a flange ring 302 provided on the outer peripheral wall of the pipe body 301. One end of the pipe body 301 passes through the water outlet pipe hole 26, and the flange ring 302 abuts against the first side surface 21.

[0046] As Figures 1 to 5 shown, in some examples, the edge of the water outlet pipe hole 26 may be recessed to form a second avoidance notch 261. A second flange 3021 is provided on the peripheral wall of the pipe body 301, and the second flange 3021 and the flange ring 302 are spaced apart along the extending direction of the pipe body 301 to form a second limiting groove 303. When the second avoidance notch 261 and the second flange 3021 are aligned, the pipe body 301 can be inserted into the water outlet pipe hole 26 to make the flange ring 302 abut against the first side surface 21, or withdrawn from the water outlet pipe hole 26 to separate the flange ring 302 from the first side surface 21; when the pipe body 301 is inserted into the water outlet pipe hole 26 and the flange ring 302 abuts against the first side surface 21, the water outlet pipe 3 can be rotated to make the edge of the water outlet pipe hole 26 and the second limiting groove 303 inserted or separated, so that the second avoidance notch 261 and the second flange 3021 are aligned or staggered.

[0047] Exemplarily, a second limiting protrusion 213 may be provided on the first side surface 21, which is the side surface of the sealing plate 20 far from the handle portion 221. When the pipe body 301 is inserted into the water outlet pipe hole 26 and the flange ring 302 abuts against the first side surface 21, the pipe body 301 can be rotated to make the second limiting protrusion 213 snap into or disengage from the second limiting groove 303. When the second limiting protrusion 213 snaps into the second limiting groove 303, the water outlet pipe 3 and the sealing plate 20 are fixed.

[0048] Here, for the mating relationship between the water outlet pipe hole 26 and the water outlet pipe 3, reference can be made to the mating relationship between the observation window 24 and the observation window 24 cover described above, which will not be elaborated here.

[0049] On the other hand, an embodiment of the present application provides an air duct machine, which includes the indoor unit housing 1 provided in any of the above embodiments. The air duct machine provided in the embodiment of the present application has the above indoor unit housing 1, which can reduce the difficulty of installing and disassembling the sealing plate 20 and improve the convenience of installing and disassembling the sealing plate 20.

[0050] The indoor unit housing and the air duct machine provided in the embodiments of the present application have been introduced in detail above. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An indoor unit housing, characterized in that, include: A main shell is provided with a receiving cavity, an opening and a first buckle portion, wherein the opening is formed on a peripheral wall of the main shell and communicates with the receiving cavity, and the first buckle portion is arranged below the opening; The sealing plate is provided with a handle portion and a second buckle portion in sequence and spaced apart along the up and down directions. The first buckle portion and the second buckle portion are buckled and connected so that the sealing plate cover is arranged on the opening portion to close the accommodating cavity. The handle portion is located on a side surface of the sealing plate away from the accommodating cavity.

2. The indoor unit housing according to claim 1, characterized in that, The sealing plate has a first side surface and a second side surface that are arranged opposite to each other, the first side surface is provided with a water pump mounting portion, and the second side surface is provided with the handle portion; when the sealing plate cover is arranged on the opening portion, the first side surface faces the accommodating cavity, and the second side surface faces away from the accommodating cavity.

3. The indoor unit housing according to claim 1, characterized in that, The handle portion is a folded edge portion formed at the top of the sealing plate; and / or the second buckle portion is a folded edge portion formed at the bottom of the sealing plate.

4. The indoor unit housing according to claim 1, characterized in that, The indoor unit housing further comprises an observation window cover. The sealing plate is provided with an observation window. The observation window cover is detachably covered on the observation window. The observation window is used to observe the condensed water level in the indoor unit housing.

5. The indoor unit housing according to claim 4, characterized in that, The edge of the observation window is recessed to form a first avoidance gap; the observation window cover comprises a cover plate portion and a plug-in portion, the plug-in portion is formed on a side surface of the cover plate portion, a first flange is provided on a peripheral wall of the plug-in portion at one end away from the cover plate portion, and the first flange and the cover plate portion are spaced apart to form a first limiting groove; When the first avoidance notch and the first flange are aligned, the plug-in portion can be inserted into the observation window to make the cover portion and the side surface of the sealing plate away from the handle portion abut against each other, or withdrawn from the observation window to separate the cover portion and the side surface of the sealing plate away from the handle portion; when the plug-in portion is inserted into the observation window and makes the cover portion and the side surface of the sealing plate away from the handle portion abut against each other, the observation window cover can be rotatably connected or separated from the edge of the observation window and the first limiting groove to align or stagger the first avoidance notch and the first flange.

6. The indoor unit housing according to claim 5, characterized in that, A first limiting protrusion is provided on a side surface of the sealing plate away from the handle portion. When the plug-in portion is inserted into the observation window and the cover portion and the side surface of the sealing plate away from the handle portion are abutted against each other, the observation window cover can be rotatably positioned so that the first limiting protrusion is inserted into or disengaged from the first limiting groove. When the first limiting protrusion is inserted into the first limiting groove, the observation window cover and the sealing plate remain fixed.

7. The indoor unit housing according to claim 1, characterized in that, A first notch is provided at the edge of the opening, and a second notch is provided at the edge of the sealing plate; when the sealing plate cover is arranged on the opening, the first notch and the second notch are connected to form a pipeline installation hole.

8. The indoor unit housing according to claim 1, characterized in that, The sealing plate is provided with a water outlet pipe hole, and the water outlet pipe hole is used for passing a water outlet pipe; the water outlet pipe includes a pipe body and a flange ring arranged on the outer peripheral wall of the pipe body, one end of the pipe body is passed through the water outlet pipe hole, and the flange ring abuts against a side surface of the sealing plate away from the handle portion.

9. The indoor unit housing according to claim 8, characterized in that, The edge of the water outlet hole is recessed to form a second avoidance notch; a second flange is provided on the peripheral wall of the pipe body, and the second flange and the flange ring are arranged at intervals along the extending direction of the pipe body to form a second limiting groove; When the second avoidance notch and the second flange are aligned, the pipe body can be inserted into the water outlet hole so that the flange ring abuts against the surface of the sealing plate on the side away from the handle part, or withdrawn from the water outlet hole so that the flange ring is separated from the surface of the sealing plate on the side away from the handle part; when the pipe body is inserted into the water outlet hole and the flange ring abuts against the surface of the sealing plate on the side away from the handle part, the water outlet pipe can be rotated to insert or separate the edge of the water outlet hole and the second limiting groove, so that the second avoidance notch and the second flange are aligned or staggered.

10. An air duct machine, characterized in that, Comprising the indoor unit housing according to any one of claims 1-9.

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