Shell assembly and ceiling electric appliance with same

Abstract

The utility model provides a shell assembly and a ceiling electric appliance with the same, and relates to the technical field of electric appliances. The shell assembly comprises a main machine shell, an air inlet and an air outlet, the splicing shell assembly is detachably connected with the host shell, the splicing shell assembly is provided with a connection position when the splicing shell assembly is connected with the host shell, and the splicing shell assembly is provided with a separation position when the splicing shell assembly is separated from the host shell; when the splicing shell assemblies are located at the connecting positions, at least part of the splicing shell assemblies and part of the side wall of the main machine shell define part of the side wall of the air duct. According to the technical scheme, the spliced shell assembly and the main machine shell can define the air channel together, the volume of the air channel can be enlarged through the spliced shell assembly while the size of the main machine shell is not increased, the air outlet volume and the performance of the shell assembly can be improved, and the requirement of a user for large air volume is met.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and more specifically, to a housing assembly and a ceiling appliance having the same. Background Technology

[0002] Common ceiling electrical appliances include air conditioners, bathroom heaters, and fresh air systems. Ceiling electrical appliances are usually composed of a housing, air duct components (such as a volute) and fan components (such as a fan) inside the housing. The performance of ceiling electrical appliances is mainly affected by the size and volume of the fan components and air duct components inside the housing.

[0003] For example, a bathroom heater is a common indoor heating device. Its main function is to raise the temperature of the bathroom by electrically heating the air. A bathroom heater typically consists of a housing, a fan, and a volute. The performance of the bathroom heater is mainly affected by the size of the fan and the volute inside the housing. In traditional bathroom heater designs, the size of the housing is limited by the size of the ceiling panels and the width of the joists, which means that the size of the bathroom heater in current technology is already at its maximum. If the housing size is further increased to improve the airflow, the bathroom heater housing will be too large to be installed in the ceiling.

[0004] Due to the problems existing in the current technology, the air volume of the bathroom heater has always been at a low level, which cannot meet the requirements of the usage environment that requires a large air volume, making the practicality of the bathroom heater in the current technology not high.

[0005] There is currently no effective solution to the aforementioned technical problems. Utility Model Content

[0006] The main objective of this invention is to provide a housing assembly and a ceiling appliance having the same, in order to solve the problem of reduced airflow inside the housing due to the limited size of the volute in the prior art.

[0007] To achieve the above objectives, according to one aspect of the present invention, a housing assembly is provided, comprising: a main housing having an air duct; and a splicing housing assembly detachably connected to the main housing, the splicing housing assembly having a connection position when connected to the main housing and a separation position when separated from the main housing; wherein, when the splicing housing assembly is in the connection position, at least a portion of the splicing housing assembly and a portion of the sidewall of the main housing form a portion of the sidewall of the air duct.

[0008] Furthermore, the air duct has an opening, and when the spliced ​​housing assembly is in the connection position, at least a portion of the spliced ​​housing assembly will block at least a portion of the opening.

[0009] Further, the splicing shell assembly comprises a splicing shell and a splicing volute.

[0010] Further, a containing space is formed between the splicing shell and the main shell, and the containing space is used for containing the splicing volute.

[0011] Further, the containing space is arranged on the splicing shell.

[0012] Further, the splicing volute is detachably connected with the splicing shell.

[0013] Further, the splicing volute is detachably connected with the splicing shell.

[0014] Further, the connecting ear is arranged close to the end of the splicing volute along the height direction of the splicing volute.

[0015] Further, the splicing volute is fixedly connected with the splicing shell, or the splicing volute and the splicing shell are integrally formed.

[0016] Further, the shell assembly further comprises at least one set of connecting assembly, and the connecting assembly comprises a first connecting piece arranged on the main shell and a second connecting piece arranged on the splicing shell.

[0017] Further, the shell assembly comprises a plurality of sets of connecting assembly, and the plurality of sets of connecting assembly are arranged at intervals along the height direction of the main shell.

[0018] Further, one of the first connecting piece and the second connecting piece is a guide column, and the other one of the first connecting piece and the second connecting piece is a guide hole.

[0019] Further, the connecting assembly is a snap-fit assembly.

[0020] Further, the air duct has an opening, and at least part of the splicing volute is arranged outside the opening when the splicing shell assembly is arranged at the connecting position.

[0021] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a ceiling electric appliance is provided, and the ceiling electric appliance has a shell assembly, and the shell assembly is the shell assembly described above.

[0022] The technical scheme of the utility model discloses, through increasing splicing shell assembly on the main machine shell, splicing shell assembly can be together with the main machine shell and form the air duct to increase the capacity of the air duct, thereby increasing the air volume, through setting splicing shell assembly and the main machine shell as detachable connection mode, make splicing shell assembly have the connecting position of connecting with the main machine shell and the separation position of the main machine shell, when splicing shell assembly is located in the separation position, the longitudinal space of shell assembly is not affected, can conveniently install shell assembly through the installation port, successfully install to the ceiling position, when splicing shell assembly is located in the connecting position, splicing shell assembly and the main machine shell together form the air duct, through splicing shell assembly can realize expanding the capacity of the air duct without increasing the size of the main machine shell, can improve the air volume and performance of shell assembly, satisfy the demand of large air volume of user. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the application, serve to explain the present application. In the drawings:

[0024] Figure 1 A structure schematic view of a first embodiment of the shell assembly according to the utility model is shown;

[0025] Figure 2 A structure schematic view of a second embodiment of the shell assembly according to the utility model is shown;

[0026] Figure 3 A structure schematic view of a third embodiment of the shell assembly according to the utility model is shown;

[0027] Figure 4 A structure schematic view of a fourth embodiment of the shell assembly according to the utility model is shown;

[0028] Figure 5 A structure schematic view of Figure 4 An enlarged schematic view of A in the figure;

[0029] Figure 6 A structure schematic view of a fifth embodiment of the shell assembly according to the utility model is shown;

[0030] Figure 7 A structure schematic view of Figure 6 An enlarged schematic view of B in the figure.

[0031] Among them, the above-mentioned drawings include the following figure marks:

[0032] 10, main machine shell; 101, opening; 11, air duct; 12, volute side plate;

[0033] 20, spliced volute; 200, connecting lug; 201, connecting hole;

[0034] 30, spliced housing; 300, accommodating space; 31, first housing; 32, second housing;

[0035] 40, connecting assembly; 41, first connecting piece; 42, second connecting piece. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] 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, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] 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 various different forms, and should not be interpreted as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided in order to make the disclosure of the present application complete and complete, and to adequately convey the ideas of these exemplary embodiments to those of ordinary skill in the art. In the drawings, the thickness of layers and regions can be exaggerated for clarity, and the same reference numerals are used to represent the same elements, so that a description thereof will be omitted.

[0040] In combination Figures 1 to 7 As shown, according to the specific embodiments of the present application, a housing assembly is provided.

[0041] Specifically, as shown in Figure 1 , Figure 2 , the shell assembly comprises a main shell 10 and a spliced shell assembly, the main shell 10 has an air duct 11; the spliced shell assembly is detachably connected with the main shell 10, the spliced shell assembly has a connected position when connected with the main shell 10, and the spliced shell assembly has a separated position when separated from the main shell 10; wherein, when the spliced shell assembly is in the connected position, at least part of the spliced shell assembly and part of the side wall of the main shell 10 enclose part of the side wall of the air duct 11.

[0042] The technical scheme of the embodiment is applied, the spliced shell assembly is added on the main shell 10, the spliced shell assembly can be enclosed with the main shell 10 to form the air duct 11, so as to increase the capacity of the air duct 11, thereby increasing the air volume, the spliced shell assembly and the main shell 10 are arranged in a detachable connection mode, so that the spliced shell assembly has a connected position connected with the main shell 10 and a separated position separated from the main shell 10, when the spliced shell assembly is in the separated position, the longitudinal space of the shell assembly is not affected, and the shell assembly can be conveniently installed to the ceiling position through the installation opening, when the spliced shell assembly is in the connected position, the spliced shell assembly is enclosed with the main shell 10 to form the air duct 11, without increasing the size of the main shell 10, the capacity of the air duct 11 can be expanded by the spliced shell assembly, the air volume and performance of the shell assembly can be improved, and the demand of the user for large air volume can be met.

[0043] As shown in Figure 1 , in the embodiment of the application, the assembly surface of the spliced shell assembly and the main shell 10 is the surface in the length direction of the main shell 10, that is, the spliced shell assembly and the main shell 10 can be regarded as two parts of the complete shell assembly cut in the length direction, so that the large width dimension of the complete shell assembly can be reduced, and the main shell 10 and the spliced shell assembly with small width dimension can pass through the installation opening separately and then be assembled at the ceiling position.

[0044] Preferably, the main shell 10 comprises a volute side plate 12, when the spliced shell assembly is in the connected position, at least part of the spliced shell assembly and the volute side plate 12 and / or part of the side wall of the main shell 10 enclose part of the side wall of the air duct 11, at least part of the side wall of the air duct 11 formed by the enclosure is arc-shaped.

[0045] Specifically, the air duct 11 is provided with an opening 101, and at least part of the opening 101 is blocked by at least part of the splicing shell assembly when the splicing shell assembly is in the connected position. In this way, the opening 101 is provided to realize the communication between the main shell 10 and the splicing shell assembly, that is, the space added by the splicing shell assembly is used to form the air duct 11 to expand the capacity of the air duct 11. When the splicing shell assembly is in the connected position, the splicing shell assembly can block the opening 101 to reduce the leakage of air in the air duct 11 and avoid performance degradation caused by shell assembly air leakage.

[0046] Further, as shown in Figure 1 、 Figure 2 , the splicing shell assembly includes a splicing volute 20 and a splicing shell 30, the splicing shell 30 is detachably connected with the main shell 10; the splicing volute 20 is arranged on the splicing shell 30; when the splicing shell assembly is in the connected position, the splicing volute 20 and part of the side wall of the main shell 10 form part of the side wall of the air duct 11. When the splicing shell assembly is in the separated position, the longitudinal space size of the shell assembly is not affected, and when the splicing shell assembly is in the connected position, the splicing volute 20 and part of the side wall of the main shell 10 form part of the side wall of the air duct 11. When applied to the structure of the electric appliance, the air volume of the electric appliance can be effectively improved, the use environment with high requirement for air volume can be adapted, the practicability of the electric appliance is improved, and the problems of insufficient air volume and low practicability of the electric appliance in the prior art are solved.

[0047] Specifically, in the embodiment of the present application, the splicing volute 20 has a blocking position for blocking at least part of the opening 101, and the splicing volute 20 has an avoiding position away from the opening 101; along the width direction of the main shell 10, the splicing shell 30 is detachably connected with the main shell 10, and when the splicing shell 30 is connected with the main shell 10, moving the splicing shell 30 can drive the splicing volute 20 to move, so that the splicing volute 20 is located in the blocking position or the avoiding position. When the splicing shell 30 is connected with the main shell 10, the splicing volute 20 is in the blocking position, the splicing volute 20 blocks the opening 101 and is connected with the main shell 10, which can avoid the performance degradation problem caused by shell air leakage.

[0048] It should be noted that in the present embodiment, the splicing shell 30 and the main shell 10 are connected in a detachable manner, so that during the installation of the shell assembly, the splicing shell 30 and the main shell 10 can be separated first, then the splicing shell 30 and the main shell 10 are connected through the installation port respectively, and then the splicing shell 30 and the main shell 10 are connected to realize sealing. The detachable connection mode also facilitates the separate maintenance and replacement of the splicing shell 30 and the main shell 10.

[0049] The skilled in the art should understand that when the spliced volute 20 is in the blocking position, the blocking position can block at least part of the opening 101, and since the spliced volute 20 has been in the position, i.e., the capacity expansion of the air duct 11 is achieved, when the shell assembly is running, the air volume expansion is achieved, and the performance of the shell assembly is improved. In the embodiment, the spliced volute 20 can increase the flow area of the air duct.

[0050] Specifically, as shown in Figure 1 、 Figure 2 , the spliced shell 30 and the main shell 10 form a containing space 300 for containing the spliced volute 20. In this way, the spliced volute 20 is arranged in the containing space 300, which can avoid dislocation, damage or poor blocking of the spliced volute 20 affected by the outside world, so as to improve the reliability of the connection between the spliced volute 20 and the main shell 10. At the same time, since the containing space 300 is formed between the spliced shell 30 and the main shell 10, even if the spliced volute 20 does not block the opening 101 tightly, the air volume leakage between the main shell 10 and the spliced shell assembly can also be avoided. When the pressure in the containing space 300 increases to the same pressure as that in the air duct 11 due to the air leakage of the spliced volute 20, the opening 101 no longer leaks air, and the shell assembly restores the normal air volume. That is, the containing space 300 can avoid the decrease of the air volume of the air duct 11 and the decrease of the performance of the shell assembly.

[0051] Preferably, the containing space 300 is arranged on the spliced shell 30. That is, by adjusting the structure of the spliced shell 30, the spliced shell 30 itself can form the containing space 300. For example, the spliced shell 30 is arranged as a groove structure, which can be used as the containing space 300. In this way, the space volume of the main shell 10 can be further reduced, and the shell assembly can be cut into the main shell 10 and the spliced shell 30 with relatively uniform volumes, so that the main shell 10 and the spliced shell 30 can be respectively arranged through the installation port during assembly.

[0052] In an embodiment of the present application, along the length direction of the main shell 10, the end of the spliced shell 30 is arranged flush with the end of the main shell 10. The flush arrangement of the end of the spliced shell 30 with the end of the main shell 10 can ensure the overall appearance and installation convenience of the shell assembly.

[0053] In another embodiment of the present application, along the length direction of the main shell 10, the end of the spliced shell 30 is arranged with a distance from the end of the main shell 10. According to the specific size of the shell assembly, the size of the spliced shell 30 is reduced as much as possible, which can save space to improve the performance of the shell assembly and reduce the cost.

[0054] Further, the spliced volute 20 and the spliced shell 30 are detachably connected. In this way, the shell assembly can be set in a mode of being connected only by the main shell 10 and the spliced volute 20 and a mode of being connected by the main shell 10, the spliced volute 20 and the spliced shell 30 according to different performance requirements of the user, or the user can freely disassemble and assemble the spliced volute 20 and the spliced shell 30, thereby improving the flexibility of the installation of the shell assembly.

[0055] Specifically, as shown in Figures 1 to 3 The spliced volute 20 is provided with a connecting lug 200, and the connecting lug 200 is provided with a connecting hole 201. The spliced volute 20 is detachably connected to the spliced shell 30 through the connecting hole 201. The connecting lug 200 and the connecting hole 201 occupy a smaller size of the accommodating space 300, do not affect the relative position of the spliced volute 20 and the spliced shell 30, and make the installation and maintenance of the spliced volute 20 more convenient. The connecting lug 200 can be arranged near one side of the end or the bottom of the spliced volute 20 along the height direction of the spliced volute 20, or one connecting lug 200 can be arranged on each side. In an embodiment of the present application, the connecting lug 200 is arranged near the end of the spliced volute 20 along the height direction of the spliced volute 20.

[0056] Alternatively, the spliced volute 20 and the spliced shell 30 are fixedly connected, or the spliced volute 20 and the spliced shell 30 are integrally formed. In this way, the reliability and stability of the spliced volute 20 and the spliced shell 30 can be improved, and the spliced volute 20 can be prevented from falling off the spliced shell 30 during work, thereby avoiding the problems of air leakage at the opening 101, noise and performance reduction.

[0057] Further, the shell assembly further comprises at least one set of connecting assemblies 40, and the connecting assemblies 40 comprise a first connecting piece 41 arranged on the main shell 10 and a second connecting piece 42 arranged on the spliced shell 30. The arrangement of the first connecting piece 41 and the second connecting piece 42 can improve the stability and convenience of the connection. The spliced shell 30 can be installed and disassembled through the connecting assemblies 40. When the shell assembly works, the first connecting piece 41 and the second connecting piece 42 are connected, and when the spliced shell 30 is disassembled, the first connecting piece 41 and the second connecting piece 42 are released and separated, which is convenient and flexible to operate.

[0058] Specifically, the shell assembly comprises a plurality of sets of connecting assemblies 40, and the plurality of sets of connecting assemblies 40 are arranged at intervals along the height direction of the main shell 10. In this way, the reliability of the spliced shell 30 in the connected state can be improved. According to specific needs, the plurality of sets of connecting assemblies 40 can also be arranged at intervals along the length direction of the main shell 10.

[0059] Further, as shown in Figure 5 , Figure 7As shown, one of the first connecting member 41 and the second connecting member 42 is a guide post, and the other is a guide hole. When the guide post extends into the guide hole, the first connecting member 41 and the second connecting member 42 are in a connected state. In this way, the first connecting member 41 and the second connecting member 42 can be connected by simply aligning the guide post and the guide hole of the first connecting member 41 and the second connecting member 42 and then pushing the spliced shell 30 or the main shell 10. When disassembling the spliced shell 30, the first connecting member 41 and the second connecting member 42 can be separated by simply applying an external force in the axial direction of the guide post and the guide hole, which is convenient and fast.

[0060] It should be noted that the connecting assembly 40 includes but is not limited to the connecting mode of the guide hole and the guide post, and can also use detachable connecting modes such as magnetic attraction, hinging, and flipping. In addition, multiple connecting assemblies 40 applied to the same shell assembly can also use multiple different connecting modes for connection.

[0061] Optionally, the connecting assembly 40 is a snap-fit assembly. The snap-fit assembly can adjust the tightness of the buckle to make the first connecting member 41 and the second connecting member 42 connect more tightly.

[0062] In an embodiment of the present application, three groups of connecting assemblies 40 are arranged at intervals along the height direction of the main shell 10. Among them, in the middle group of connecting assemblies 40, one of the first connecting member 41 and the second connecting member 42 uses a guide post, and the other uses a guide hole for connection. The two groups of connecting assemblies 40 at both ends use a snap-fit assembly for connection, which can improve the reliability of the connection between the spliced shell 30 and the main shell 10.

[0063] Further, as shown in Figure 3 , Figure 4 , Figure 6 As shown, the spliced shell 30 includes a first shell 31 and a second shell 32. The first shell 31 is arranged to extend along the length direction of the main shell 10. The second shell 32 is two, and one second shell 32 is arranged at each end of the first shell 31. The second shell 32 is arranged to extend along the width direction of the main shell 10. When the spliced shell 30 is connected to the main shell 10, the main shell 10, the first shell 31, and the second shell 32 jointly enclose a containing space 300. The side of the second shell 32 close to the main shell 10 is provided with a second connecting member 42. In this way, the first shell 31 and the two second shells 32 and the main shell 10 enclose the containing space 300 into a cuboid space, and the spliced volute 20 is arranged in the cuboid containing space 300. The size of the spliced volute 20 can be adjusted as needed, that is, the capacity of the expanded air duct 11 is adjusted within the size of the containing space 300.

[0064] Further, the air duct 11 has an opening 101, and at least part of the spliced volute 20 protrudes outside the opening 101 when the spliced shell assembly is located at the connection position. The protruding part of the spliced volute 20 can increase the capacity of the air duct 11, thereby increasing the air volume and improving the air volume and performance of the shell assembly.

[0065] According to another specific embodiment of the present application, a ceiling appliance is also provided, which has a shell assembly, and the shell assembly is the shell assembly in the above-mentioned embodiments. The ceiling appliance includes but is not limited to a kitchen air conditioner, a non-kitchen air conditioner, a bathroom heater, a fresh air machine, and the like.

[0066] When the shell assembly in the above-mentioned embodiments is applied to the ceiling appliance, since the spliced volute 20 can protrude outward to increase the flow area of the air duct 11, the main shell 10 can have a larger air volume, thereby making the air-out effect of the ceiling appliance better, being more suitable for environments with higher air volume requirements, and improving the air-out performance and practicability of the ceiling appliance.

[0067] In an embodiment of the present application, the ceiling appliance is a bathroom heater, and the bathroom heater has the shell assembly in the above-mentioned embodiments. Specifically, the main shell 10 is a main shell of the bathroom heater, the volute side plate 12 of the air duct 11 is formed on the main shell 10, and the air duct 11 and the main shell 10 are two independent components. Of course, the volute side plate 12 can also be provided in a plate structure, and the volute side plate 12 and the side wall of the main shell 10 and the bottom plate of the shell form part of the air duct 11. Specifically, the side of the main shell 10 opposite to the bottom is provided with a wind collecting cover, the outer side of the wind collecting cover is provided with a panel, and the lamp body assembly is arranged on the side where the wind collecting cover and the panel are located.

[0068] When the shell assembly is applied to the bathroom heater, the spliced volute 20 is arranged to protrude outward on the main shell 10, so that the flow area of the air duct of the bathroom heater is increased, thereby making the shell have a larger air volume without improving the size of the fan and the shell assembly of the bathroom heater, making the air-out effect of the bathroom heater better, and the part of the spliced shell assembly protruding outward on the main shell 10 is switched by the plug-in mode of the guide column and the guide hole, avoiding the complexity of installation while meeting the different air volume requirements of users, realizing the performance optimization and installation technology simplification effect in the technical field of bathroom heater equipment, and improving the air-out performance and practicability of the bathroom heater.

[0069] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical" and "horizontal" as can be perceived herein relative to the accompanying drawings refer to the orientation of the components being described. However, it is to be understood that the inventive concepts can assume various alternative orientations, except where expressly omitted.

[0070] It is also important to note that the use of any of the following terms: one embodiment, another embodiment, an embodiment, one example, another example, or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiment. Further, where a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one of ordinary skill in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments.

[0071] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0072] The preferred embodiments of the present application have been described above with the specific details. Obviously, the present application can be carried out without the specific details. Thus, the above description is not intended to limit the present application, and it is to be understood that various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A housing assembly, characterized by, The shell assembly comprises: a main shell (10) having an air duct (11); a spliced shell assembly detachably connected with the main shell (10), the spliced shell assembly having a connected position when connected with the main shell (10) and a separated position when separated from the main shell (10); wherein, when the spliced shell assembly is in the connected position, at least part of the spliced shell assembly and part of the side wall of the main shell (10) enclose part of the side wall of the air duct (11).

2. The housing assembly of claim 1, wherein, The air duct (11) has an opening (101), and when the spliced shell assembly is in the connected position, at least part of the spliced shell assembly blocks at least part of the opening (101).

3. The housing assembly of claim 1 or 2, wherein, The spliced shell assembly comprises: a spliced shell (30) detachably connected with the main shell (10); a spliced volute (20) arranged on the spliced shell (30); When the spliced shell assembly is in the connected position, the spliced volute (20) and part of the side wall of the main shell (10) enclose part of the side wall of the air duct (11).

4. The housing assembly of claim 3, wherein, A containing space (300) is formed between the spliced shell (30) and the main shell (10), and the containing space (300) is used for containing the spliced volute (20).

5. The housing assembly of claim 4, wherein, The containing space (300) is arranged on the spliced shell (30).

6. The housing assembly of claim 3, wherein, The spliced volute (20) is detachably connected with the spliced shell (30).

7. The housing assembly of claim 6, wherein, The spliced volute (20) is provided with a connecting lug (200) having a connecting hole (201), and the spliced volute (20) is detachably connected with the spliced shell (30) through the connecting hole (201).

8. The housing assembly of claim 7, wherein, The connecting lug (200) is arranged close to the end of the spliced volute (20) in the height direction of the spliced volute (20).

9. The housing assembly of claim 3, wherein, The spliced volute (20) is fixedly connected with the spliced shell (30), or the spliced volute (20) is integrally formed with the spliced shell (30).

10. The housing assembly of claim 6, wherein, The shell assembly further comprises at least one set of connecting assemblies (40), and each connecting assembly (40) comprises a first connecting piece (41) arranged on the main shell (10) and a second connecting piece (42) arranged on the spliced shell (30).

11. The housing assembly of claim 10, wherein, The shell assembly comprises a plurality of sets of connecting assemblies (40), and the plurality of sets of connecting assemblies (40) are arranged at intervals in the height direction of the main shell (10).

12. The housing assembly of claim 10, wherein, One of the first connecting piece (41) and the second connecting piece (42) is a guide column, and the other is a guide hole.

13. The housing assembly of claim 10, wherein, The connecting assembly (40) is a snap-fit assembly.

14. The housing assembly of claim 3, wherein, The air duct (11) has an opening (101), and when the spliced shell assembly is in the connected position, at least part of the spliced volute (20) is arranged outside the opening (101).

15. A ceiling mounted appliance characterized by, The ceiling mounted appliance has a housing assembly, the housing assembly being according to any one of claims 1-14.

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