Shell assembly and ceiling electric appliance with same

Abstract

The utility model provides a shell assembly and a ceiling electric appliance with the same. The shell assembly comprises an air duct part and a splicing air duct, the air duct part is provided with a volute air duct, and an opening structure is formed in the side wall of the volute air duct; the spliced air duct is movably connected with the air duct part, so that the spliced air duct has an assembly position when the spliced air duct is connected with the air duct part and has a disassembly position separated from the air duct part; when the splicing air channel is located at the assembling position, the splicing air channel blocks at least part of the opening structure. According to the scheme, the shell assembly is designed to be of the spliced structure, the size of the spliced air channel and the size of the air channel part are both smaller than the overall size of the shell assembly, in the installation process, the position of the spliced air channel can be controlled according to the installation environment, and therefore the purpose that even if the size of the shell assembly (air channel) is increased, limitation of the installation space is avoided is achieved; and therefore, the problem of low air volume caused by limited mounting space of the shell assembly (air duct) is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceiling appliances, and in particular to a shell assembly and a ceiling appliance having the shell assembly. Background Art

[0002] Common ceiling-mounted appliances include air conditioners, bathroom heaters, and fresh air blowers. Bathroom heaters, as a common indoor heating device, primarily heat the air to increase the bathroom temperature. These heaters typically consist of a housing, fan, air duct, and heater. The size of the fan impeller and air duct are closely linked to the performance of the heater.

[0003] In existing technologies, in order to improve the performance of bathroom heaters, attempts have been made to improve the size of the fan impeller and air duct of the bathroom heater, so that the fan impeller and air duct of the bathroom heater are increased as much as possible based on the original size. However, the limitation of this method is that the size of the fan impeller and air duct is limited by the size of the box, and the size of the bathroom heater box is limited by the size of the ceiling gusset plate and the width of the keel. Therefore, the size of the fan impeller and air duct is limited by the size of the ceiling gusset plate and the width of the keel. This limitation makes the performance improvement of the bathroom heater unable to meet the high performance requirements of users.

[0004] For the above problems, no effective solution has been proposed yet. Utility Model Content

[0005] The main purpose of the utility model is to provide a shell assembly and a ceiling appliance having the same, so as to solve the technical problem in the prior art that the shell assembly has low air output due to limited installation space.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a shell assembly is provided, including: an air duct portion, the air duct portion having a volute air duct, and the side wall of the volute air duct is formed with an opening structure; a spliced ​​air duct, the spliced ​​air duct is detachably connected to the air duct portion, so that the spliced ​​air duct has an assembly position when connected to the air duct portion, and the spliced ​​air duct has a disassembly position when separated from the air duct portion; wherein, when the spliced ​​air duct is in the assembly position, the spliced ​​air duct will block at least part of the opening structure.

[0007] Furthermore, the opening structure includes: a first opening, the first opening is arranged on the volute air duct, and the first opening is extended along the width direction of the air duct portion; a second opening, the second opening is arranged on the volute air duct, and the second opening is extended along the length direction of the air duct portion; wherein the first opening and the second opening are connected.

[0008] Furthermore, the spliced ​​air duct is detachably connected to the air duct portion via a first connecting piece, and the spliced ​​air duct drives the first connecting piece to move along the width direction of the air duct portion to an assembly position and a disassembly position.

[0009] Furthermore, there are multiple first connecting members, and the multiple first connecting members are arranged along the edge of the spliced ​​air duct, wherein the first connecting members are elastic snaps, and the multiple first connecting members have a locked state in which they are plugged into corresponding multiple first grooves on the air duct part, and an unlocked state in which they are separated from the air duct part.

[0010] Furthermore, the shell assembly also includes: a main shell, the air duct portion is arranged inside the main shell, and the opening structure on the air duct portion passes through the side wall of the main shell; wherein, when the spliced ​​air duct is in the assembly position, at least part of the spliced ​​air duct is located outside the main shell.

[0011] Furthermore, the main body shell includes: a first shell, the first shell is connected to the air duct part, and at least part of the air duct part is located inside the first shell; a second shell, the second shell is connected to the splicing air duct, and at least part of the splicing air duct is located on the outside of the second shell, and the second shell is detachably connected to the first shell through the splicing air duct.

[0012] Furthermore, part of the air duct portion extends outward from the first shell along the length direction of the first shell, and / or part of the air duct portion extends outward from the first shell along the width direction of the first shell.

[0013] Furthermore, the second shell includes: a first connecting section, the first connecting section extends along the width direction of the main shell, and the length of the first connecting section is less than the width of the main shell; a second connecting section, the second connecting section extends along the length direction of the main shell, and the length of the second connecting section is less than the length of the main shell; wherein, part of the spliced ​​air duct is located on the outside of the first connecting section, and / or, part of the spliced ​​air duct is located on the outside of the second connecting section.

[0014] Furthermore, the second shell includes: a third connecting section, which is extended along the width direction of the second shell, and the length of the third connecting section is smaller than the width of the main shell; a fourth connecting section, which is extended along the width direction of the second shell, and the length of the fourth connecting section is smaller than the width of the main shell; a fifth connecting section, which is connected between the third connecting section and the fourth connecting section; wherein, part of the spliced ​​air duct is located on the outside of the third connecting section, and / or, part of the spliced ​​air duct is located on the outside of the fifth connecting section.

[0015] Furthermore, the spliced ​​air duct is detachably connected to the first shell through the second connecting piece, and the spliced ​​air duct drives the second connecting piece to move along the width direction of the first shell to the assembly position and the disassembly position.

[0016] Furthermore, there are multiple second connecting parts, and the multiple second connecting parts are distributed along the edge of the spliced ​​air duct, wherein the second connecting parts are elastic buckles, and the multiple second connecting parts have a locked state of being plugged into the corresponding multiple first grooves on the air duct part, and an unlocked state of being separated from the second shell.

[0017] According to another aspect of the present invention, a ceiling-mounted electrical appliance is provided. The ceiling-mounted electrical appliance includes a housing assembly, and the housing assembly is the housing assembly described above.

[0018] By applying the technical solution of the present invention, the spliced ​​duct and the duct section can be detachably connected, and the spliced ​​duct can block the opening structure of the duct side wall to form a complete duct. In the above solution, the shell assembly is designed as a spliced ​​structure. The dimensions of the spliced ​​duct and the duct section are both smaller than the overall dimensions of the shell assembly. During installation, the position of the spliced ​​duct can be controlled according to the installation environment. This achieves the purpose of not being restricted by the installation space even if the size of the shell assembly (duct) is increased, thereby solving the problem of low air output due to the limited installation space of the shell assembly (duct). BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 FIG1 shows a structural schematic diagram of a first embodiment of a housing assembly according to the present utility model;

[0021] Figure 2 FIG2 shows a structural schematic diagram of a second embodiment of a housing assembly according to the present utility model;

[0022] Figure 3 FIG2 shows a structural schematic diagram of a third embodiment of a housing assembly according to the present utility model;

[0023] Figure 4 A schematic structural diagram of a spliced ​​air duct according to an embodiment of a housing assembly of the present utility model is shown;

[0024] Figure 5 FIG2 shows a structural schematic diagram of a fourth embodiment of a housing assembly according to the present utility model;

[0025] Figure 6 FIG2 shows a structural schematic diagram of a fifth embodiment of a housing assembly according to the present utility model;

[0026] Figure 7 A schematic structural diagram of a spliced ​​air duct according to an embodiment of a housing assembly of the present utility model is shown;

[0027] Figure 8 A structural schematic diagram of a sixth embodiment of a housing assembly according to the present utility model is shown.

[0028] The above drawings include the following reference numerals:

[0029] 1. Host housing;

[0030] 11. First housing; 12. Second housing; 121. First connecting section; 122. Second connecting section; 123. Third connecting section; 124. Fourth connecting section; 125. Fifth connecting section;

[0031] 2. Air duct department;

[0032] 21. Volute air duct; 22. Air outlet duct; 23. First opening; 24. Second opening; 25. First groove; 26. Connecting column; 27. Air outlet;

[0033] 3. Splicing air duct;

[0034] 31. First connecting member; 32. Second connecting member;

[0035] 4. Collector plate;

[0036] 41. Second groove;

[0037] 5. Fan. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0042] Combine Figures 1 to 8 As shown, according to a specific embodiment of the present application, a housing assembly is provided.

[0043] Specifically, the housing assembly includes an air duct portion 2 and a spliced ​​air duct 3. The air duct portion 2 includes a volute air duct 21, the sidewall of which is formed with an opening structure. The spliced ​​air duct 3 is detachably connected to the air duct portion 2, so that the spliced ​​air duct 3 has an assembled position when connected to the air duct portion 2 and a disassembled position when separated from the air duct portion 2. When the spliced ​​air duct 3 is in the assembled position, it blocks at least part of the opening structure.

[0044] By applying the technical solution of the present invention, the spliced ​​air duct 3 is detachably connected to the air duct portion 2, and the spliced ​​air duct 3 can block the opening structure of the air duct side wall to form a complete air duct. In the above solution, the shell assembly is designed as a spliced ​​structure. The dimensions of the spliced ​​air duct 3 and the air duct portion 2 are both smaller than the overall dimensions of the shell assembly. During installation, the position of the spliced ​​air duct 3 can be controlled according to the installation environment, thereby achieving the purpose of not being restricted by the installation space even if the size of the shell assembly (air duct) is increased. This solves the problem of low air output due to the limited installation space of the shell assembly (air duct).

[0045] In an exemplary embodiment of the present application, the air duct portion 2 includes a volute air duct 21 and an air outlet air duct 22, wherein the air outlet air duct 22 is connected to the volute air duct 21 along the length direction of the air duct portion 2, as shown in FIG. Figure 1 shown.

[0046] As an alternative embodiment, the air duct portion 2 includes a volute air duct 21 and an air outlet air duct 22. The volute air duct 21 is a volute shell structure, and the air outlet air duct 22 serves as an outlet of the volute shell structure.

[0047] In an exemplary embodiment of the present application, the opening structure includes: a first opening 23 and a second opening 24, the first opening 23 is arranged on the volute air duct 21, and the first opening 23 extends along the width direction of the air duct portion 2, the second opening 24 is arranged on the volute air duct 21, and the second opening 24 extends along the length direction of the air duct portion 2, wherein the first opening 23 and the second opening 24 are connected.

[0048] Specifically, if Figure 1 As shown, the collector plate 4 serves as a part of the air duct portion 2 to block one side of the air duct portion 2. The air duct portion 2 includes a volute air duct 21 and an outlet air duct 22, wherein the outlet air duct 22 is connected to the volute air duct 21 along the length direction of the air duct portion 2, that is, the outlet air duct 22 is connected to the outlet side of the volute air duct 21, the air inlet side of the volute air duct 21 serves as the air inlet of the air duct portion 2, and the air outlet side of the outlet air duct 22 serves as the air outlet 27 of the air duct portion 2, wherein the air outlet 27 is provided through the collector plate 4. The first opening 23 extends along the width direction of the air duct portion 2, and the second opening 24 extends along the length direction of the air duct portion 2. The first opening 23 is connected to the second opening 24, that is, the opening structure is an L-shaped structure, wherein a portion of the second opening 24 is provided through the side wall of the outlet air duct 22. That is, the air duct of the shell assembly is cut into an L shape, and the width and length of the air duct can be increased according to the installation environment to improve the air output of the shell assembly.

[0049] A connecting column 26 is provided at the top of the air outlet duct 22 , and the collecting plate 4 is connected to the air outlet duct 22 via the connecting column 26 .

[0050] It should be further explained that the shell assembly of this embodiment also includes a panel, which covers the collecting plate 4. An air inlet channel is formed between the collecting plate 4 and the panel. The indoor air is sucked from the air inlet channel into the volute air duct 21 through the fan 5, and then flows out from the air outlet 27 of the air outlet duct 22.

[0051] Furthermore, the spliced ​​air duct 3 is detachably connected to the air duct portion 2 via the first connecting member 31 , and the spliced ​​air duct 3 drives the first connecting member 31 to move to an assembly position and a disassembly position along the width direction of the air duct portion.

[0052] It should be noted that the spliced ​​duct 3 is an L-shaped structure, that is, a portion of the spliced ​​duct 3 extends along the width of the duct portion, and another portion of the spliced ​​duct 3 extends along the length of the duct portion. During installation, the spliced ​​duct 3 only needs to be moved along the width of the duct portion 2 to achieve a one-time splicing of the duct, eliminating the need for multiple adjustments to the spliced ​​duct 3, making installation convenient.

[0053] Specifically, if Figure 4As shown, there are multiple first connecting members 31, and multiple first connecting members 31 are arranged along the edge of the spliced ​​air duct 3, wherein the first connecting member 31 is an elastic snap, and the multiple first connecting members 31 have a locked state corresponding to the multiple first grooves 25 on the air duct portion, and an unlocked state separated from the air duct portion. It can be understood by those skilled in the art that the spliced ​​air duct 3 is connected to the air duct portion 2 by an elastic snap, and the working principle of the elastic snap connection is to generate a certain pressure or friction between the two parts or components through the shape design of the snap and the elasticity of the material, so that they are firmly connected together. Usually, one part has a protrusion or groove, and the other part has a corresponding groove or protrusion, and they are connected together by elastic deformation. Among them, the elastic snap connection has the characteristics of quick disassembly and installation, and the spliced ​​air duct 3 and the air duct portion 2 are connected by the elastic snap, which can greatly improve the assembly efficiency.

[0054] Furthermore, if Figure 4 As shown, the end of the spliced ​​air duct 3 that is connected to the collecting plate 4 is also provided with a first connecting piece 31, and the collecting plate 4 is provided with a second groove 41. The spliced ​​air duct 3 is plugged into the second groove 41 on the collecting plate 4 through the first connecting piece 31.

[0055] In an exemplary embodiment of the present application, the shell assembly also includes: a main body shell 1, an air duct portion 2 is arranged in the main body shell 1, and an opening structure on the air duct portion 2 passes through the side wall of the main body shell 1, wherein, when the spliced ​​air duct 3 is in the assembly position, at least part of the spliced ​​air duct 3 is located outside the main body shell 1.

[0056] It should be noted that the function of the mainframe housing 1 is to protect the various components within the mainframe. Furthermore, the mainframe housing 1 is limited by the installation space, which in turn limits the air duct to the size of the mainframe housing 1. When the spliced ​​air duct 3 is in the assembly position, at least a portion of the spliced ​​air duct 3 is located outside the mainframe housing 1. During installation, the position of the spliced ​​air duct 3 can be controlled according to the installation environment, thereby achieving the goal of increasing the size of the air duct without being limited by the size of the mainframe housing 1 and the installation space.

[0057] The main body shell 1 can be a non-spliced ​​structure or a spliced ​​structure.

[0058] For example, Figure 2 、 Figure 3 As shown, the host shell 1 is a non-spliced ​​structure, the air duct part 2 is arranged in the host shell 1, and the opening structure on the air duct part 2 is set through the side wall of the host shell 1. Among them, the connection method of the spliced ​​air duct 3 and the air duct part 2 is the same as Figure 1 The connection method is the same as in .

[0059] For example, Figure 5 、 Figure 6As shown, the main body housing 1 is a spliced ​​structure. Specifically, the main body housing 1 includes: a first housing 11 and a second housing 12. The first housing 11 is connected to the air duct portion 2, at least part of which is located inside the first housing 11. The second housing 12 is connected to the spliced ​​air duct 3, at least part of which is located outside the second housing 12. The second housing 12 is detachably connected to the first housing 11 through the spliced ​​air duct 3.

[0060] Furthermore, since the first shell 11 is connected to the air duct portion 2, the second shell 12 is connected to the spliced ​​air duct 3, that is, when the spliced ​​air duct 3 is connected to the air duct portion 2 through an elastic snap, the second shell 12 is also connected to the first shell 11 through the spliced ​​air duct 3 through an elastic snap, and the second shell 12 and the spliced ​​air duct 3 are disassembled together for easy installation.

[0061] Furthermore, a portion of the air duct portion 2 extends outward from the first housing 11 along the length direction of the first housing 11, and / or a portion of the air duct portion 2 extends outward from the first housing 11 along the width direction of the first housing 11. The main housing 1 is a spliced ​​structure, and a portion of the air duct portion 2 is located outside the first housing 11, which can further increase the length and / or width of the main housing 1.

[0062] Exemplarily, the second housing 12 includes a first connecting section 121 and a second connecting section 122. The first connecting section 121 extends along the width of the main housing 1, and its length is less than the width of the main housing 1. The second connecting section 122 extends along the length of the main housing 1, and its length is less than the length of the main housing 1. Part of the spliced ​​air duct 3 is located outside the first connecting section 121, and / or part of the spliced ​​air duct 3 is located outside the second connecting section 122.

[0063] Specifically, if Figures 5 to 7 As shown, the air duct portion 2 is connected to the first housing 11, and a portion of the air duct portion 2 extends outward from the first housing 11 along the length direction of the first housing 11. The second housing 12 includes a first connecting section 121 and a second connecting section 122, which are arranged vertically, that is, the second housing 12 has an L-shaped structure.

[0064] Furthermore, the splicing air duct 3 is detachably connected to the first shell 11 via the second connecting member 32 , and the splicing air duct 3 drives the second connecting member 32 to move along the width direction of the first shell 11 to an assembly position and a disassembly position.

[0065] When the spliced ​​air duct 3 drives the second connecting member 32 along the width direction of the first shell 11 to the assembly position, the spliced ​​air duct 3 is connected to the first shell 11, and the first shell 11 and the second shell 12 are also connected. At this time, the spliced ​​air duct 3 and the air duct section 2 are connected, forming a complete air duct. The spliced ​​air duct 3 drives the first connecting member 31 along the width direction of the first shell 11 to the disassembly position. At this time, the spliced ​​air duct 3 is separated from the first shell 11, and the main body shell 1 is divided into two parts.

[0066] Specifically, if Figure 7 As shown, there are multiple second connecting members 32, and the multiple second connecting members 32 are distributed along the edge of the spliced ​​air duct 3, wherein the second connecting members 32 are elastic snaps, and the multiple second connecting members 32 have a locked state of corresponding insertion with the multiple second grooves 41 on the air duct part 2, and an unlocked state of separation from the second shell 12.

[0067] For example, Figure 8 As shown, the second shell 12 includes: a third connecting segment 123, a fourth connecting segment 124 and a fifth connecting segment 125, the third connecting segment 123 is extended along the width direction of the second shell 12, and the length of the third connecting segment 123 is less than the width of the main shell 1, the fourth connecting segment 124 is extended along the width direction of the second shell 12, and the length of the fourth connecting segment 124 is less than the width of the main shell 1, and the fifth connecting segment 125 is connected between the third connecting segment 123 and the fourth connecting segment 124, wherein part of the splicing air duct 3 is located on the outside of the third connecting segment 123, and / or part of the splicing air duct 3 is located on the outside of the fifth connecting segment 125.

[0068] It should be noted that the host housing 1 is spliced ​​along both the width direction and the length direction, which can further expand the length and width dimensions of the host housing 1.

[0069] According to a specific embodiment of the present application, a ceiling-mounted appliance is provided, comprising a housing assembly, which is the housing assembly described in the above embodiment. The ceiling-mounted appliance includes, but is not limited to, air outlet devices such as kitchen air conditioners, non-kitchen air conditioners, bathroom heaters, and fresh air blowers.

[0070] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0071] 1. The shell assembly is designed to be a spliced ​​structure. The sizes of the spliced ​​air duct 3 and the air duct portion 2 are both smaller than the overall size of the shell assembly. During the installation process, the position of the spliced ​​air duct 3 can be controlled according to the installation environment, so that even if the size of the shell assembly (air duct) is increased, it will not be restricted by the installation space, thereby solving the problem of low air output of the shell assembly (air duct) due to limited installation space.

[0072] 2. The host housing 1 is designed to be a spliced ​​structure. During the installation process, the position of the spliced ​​housing can be controlled according to the installation environment, thereby further expanding the size of the host housing 1 to increase the air output of the housing assembly.

[0073] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0074] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as being included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also fall within the scope of the present invention.

[0075] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A housing assembly, characterized in that: include: An air duct portion (2), the air duct portion (2) having a volute air duct (21), and a side wall of the volute air duct (21) having an opening structure; A spliced ​​air duct (3), the spliced ​​air duct (3) being detachably connected to the air duct portion (2), so that the spliced ​​air duct (3) has an assembled position when connected to the air duct portion (2), and the spliced ​​air duct (3) has a disassembled position when separated from the air duct portion (2); Wherein, when the spliced ​​air duct (3) is located at the assembly position, the spliced ​​air duct (3) blocks at least part of the opening structure.

2. The housing assembly according to claim 1, wherein: The opening structure comprises: a first opening (23), the first opening (23) being provided on the volute air duct (21), the first opening (23) being extended along the width direction of the air duct portion (2); a second opening (24), the second opening (24) being provided on the volute air duct (21), the second opening (24) being extended along the length direction of the air duct portion (2); Wherein, the first opening (23) and the second opening (24) are arranged in communication.

3. The housing assembly according to claim 2, wherein: The spliced ​​air duct (3) is detachably connected to the air duct portion (2) via a first connecting piece (31), and the spliced ​​air duct (3) drives the first connecting piece (31) to move along the width direction of the air duct portion to the assembly position and the disassembly position.

4. The housing assembly according to claim 3, wherein: There are a plurality of first connecting members (31), and the plurality of first connecting members (31) are arranged along the edge of the spliced ​​air duct (3), wherein the first connecting member (31) is an elastic buckle, and the plurality of first connecting members (31) have a locked state corresponding to the plurality of first grooves (25) on the air duct portion (2), and an unlocked state separated from the air duct portion (2).

5. The housing assembly according to any one of claims 1 to 4, characterized in that: The housing assembly further comprises: A host housing (1), the air duct portion (2) being arranged in the host housing (1), and the opening structure on the air duct portion (2) being arranged to pass through the side wall of the host housing (1); Wherein, when the spliced ​​air duct (3) is located at the assembly position, at least a portion of the spliced ​​air duct (3) is located outside the main body housing (1).

6. The housing assembly according to claim 5, wherein: The host housing (1) comprises: a first shell (11), the first shell (11) being connected to the air duct portion (2), and at least a portion of the air duct portion (2) being located within the first shell (11); A second shell (12), wherein the second shell (12) is connected to the splicing air duct (3), at least a portion of the splicing air duct (3) is located outside the second shell (12), and the second shell (12) is detachably connected to the first shell (11) via the splicing air duct (3).

7. The housing assembly according to claim 6, wherein: Part of the air duct portion (2) extends outward from the first shell (11) along the length direction of the first shell (11), and / or part of the air duct portion (2) extends outward from the first shell (11) along the width direction of the first shell (11).

8. The housing assembly according to claim 6 or 7, characterized in that: The second housing (12) comprises: a first connecting section (121), the first connecting section (121) extending along the width direction of the host housing (1), the length of the first connecting section (121) being smaller than the width of the host housing (1); a second connecting section (122), the second connecting section (122) extending along the length direction of the host housing (1), the length of the second connecting section (122) being shorter than the length of the host housing (1); Part of the spliced ​​air duct (3) is located outside the first connecting section (121), and / or part of the spliced ​​air duct (3) is located outside the second connecting section (122).

9. The housing assembly according to claim 6 or 7, characterized in that: The second housing (12) comprises: a third connecting section (123), the third connecting section (123) extending along the width direction of the second shell (12), the length of the third connecting section (123) being smaller than the width of the host shell (1); a fourth connecting section (124), the fourth connecting section (124) extending along the width direction of the second shell (12), the length of the fourth connecting section (124) being smaller than the width of the host shell (1); a fifth connecting section (125), the fifth connecting section (125) being connected between the third connecting section (123) and the fourth connecting section (124); Part of the spliced ​​air duct (3) is located outside the third connecting section (123), and / or part of the spliced ​​air duct (3) is located outside the fifth connecting section (125).

10. The housing assembly according to claim 6, wherein: The spliced ​​air duct (3) is detachably connected to the first shell (11) via a second connecting piece (32), and the spliced ​​air duct (3) drives the second connecting piece (32) to move along the width direction of the first shell (11) to the assembly position and the disassembly position.

11. The housing assembly according to claim 10, wherein: There are a plurality of second connecting members (32), and the plurality of second connecting members (32) are distributed along the edge of the spliced ​​air duct (3), wherein the second connecting member (32) is an elastic buckle, and the plurality of second connecting members (32) have a locked state corresponding to the plurality of second grooves (41) on the air duct portion (2), and an unlocked state separated from the second shell (12).

12. A ceiling-mounted electrical appliance, comprising a housing assembly, characterized in that: The housing assembly is the housing assembly according to any one of claims 1 to 11.

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