Shell assembly and ceiling electric appliance with same

Abstract

The utility model provides a shell assembly and a ceiling electric appliance with the shell assembly, the shell assembly comprises a shell and a spliced volute, the shell is provided with a volute side plate used for forming an air duct, and the volute side plate is provided with an opening; the spliced volute is movably connected with the shell, so that the spliced volute is provided with a plugging position for plugging the opening and an avoiding position far away from the opening, and when the spliced volute is located at the plugging position, at least part of the spliced volute is located outside the shell; the volute side plate comprises a first volute section close to the volute tongue, the first volute section is of an arc-shaped structure, and the molded line curvature change rate of the first volute section is smaller than that of the spliced volute. According to the scheme, the size of the air duct and the size of the fan are increased by arranging the air duct into the spliced structure and changing the molded line of the volute side plate in the shell assembly, so that the air outlet amount of the shell assembly is increased, and the problem that the air outlet amount of the shell assembly is low due to the installation space is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of ceiling electrical appliances, and more specifically, to a housing assembly and a ceiling electrical appliance having the same. This application claims priority to the patent application filed on July 26, 2024, with China National Intellectual Property Administration, application number 202421803508.0, entitled "A Housing Assembly and a Ceiling Electrical Appliance Having the Same". Background Technology

[0002] Common ceiling-mounted electrical appliances include air conditioners, bathroom heaters, and fresh air systems. Among these, bathroom heaters, as a commonly used indoor heating device, primarily function to raise the temperature of the bathroom by heating the air. Bathroom heaters typically consist of a housing, a fan, and a volute, with the size of the fan and volute closely related to the performance of the heater.

[0003] In existing technologies, attempts to improve the performance of bathroom heaters involve modifying the dimensions of the fan and casing to maximize their size. However, this approach is limited by the dimensions of the enclosure, which in turn are constrained by the size of the ceiling panels and the width of the joists. This limitation prevents the performance improvements from meeting users' high demands for enhanced bathroom heater performance. Utility Model Content

[0004] The main objective of this invention is to provide a housing assembly and a ceiling appliance having the same, in order to solve the technical problem of low air volume caused by limited installation space in the housing assembly in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a housing assembly is provided, comprising: a housing having a volute side plate for forming an air duct, the volute side plate having an opening; and a splicing volute movably connected to the housing such that the splicing volute has a blocking position for sealing the opening and a clearance position away from the opening, wherein when the splicing volute is in the blocking position, at least a portion of the splicing volute is located in the air duct outside the housing; the volute side plate includes a first volute segment disposed near the volute tongue, the first volute segment having an arc-shaped structure, and the rate of change of curvature of the first volute segment being less than the rate of change of curvature of the splicing volute.

[0006] Furthermore, the volute side plate also includes a second volute segment located away from the volute tongue, and the second volute segment has an arc-shaped structure.

[0007] Furthermore, when the spliced ​​volute is in the blocking position, the second volute segment is located between the first volute segment and the spliced ​​volute.

[0008] Furthermore, the rate of change of curvature of the second volute segment is greater than that of the first volute segment, and less than or equal to that of the spliced ​​volute.

[0009] Furthermore, the volute side plate also includes a third volute segment, which is connected between the first and second volute segments. The third volute segment is positioned opposite to the opening, and the profile of the third volute segment is a straight line.

[0010] Furthermore, the minimum distance between the sidewall of the volute tongue and the center point of the air duct is L1, and the distance between the third volute segment and the center point of the air duct is L2, where L1 = L2.

[0011] Furthermore, a fan is installed at the center of the air duct, with a radius of R. The minimum distance between the fan and the sidewall of the volute tongue is L3, where L1 = R + L3, and 7mm ≤ L3 ≤ 10mm.

[0012] Furthermore, the edge of the third volute segment is smoothly transitioned to the edges of the first and second volute segments, respectively.

[0013] Furthermore, the curvature of the first volute segment changes by a rate of 0.

[0014] Furthermore, the width of the shell is W, where 270mm ≤ W ≤ 300mm.

[0015] Furthermore, when the spliced ​​volute is in the sealing position, the edge of the spliced ​​volute is smoothly transitioned to the edge of the opening.

[0016] According to another aspect of the present invention, a ceiling electrical appliance is provided, the ceiling electrical appliance including a housing assembly, the housing assembly being the aforementioned housing assembly.

[0017] By applying the technical solution of this utility model, the side plate of the volute located inside the housing and the spliced ​​volute located outside the housing are spliced ​​together to form the side wall of the air duct. Part of the air duct side wall is located on the outside of the housing 1. This increases the width of the housing and also increases the internal flow rate of the air duct. Furthermore, the air duct is designed as a spliced ​​structure, and the position of the spliced ​​volute is controlled according to the installation environment, thus ensuring that the installation space is not limited even when the size of the housing assembly is increased. Specifically, the rate of change of curvature of the first volute segment is less than that of the spliced ​​volute. Based on the growth rate of the volute radius corresponding to the first volute segment, the growth rate of the volute radius corresponding to the spliced ​​volute is further increased. That is, under the premise of a fixed fan size, the size of the air duct is further increased to further increase the airflow of the housing assembly. In addition, while the size of the air duct increases, the size of the fan installed inside the air duct can be increased accordingly without exceeding the housing size, further increasing the airflow of the volute. The above-mentioned solution uses a spliced ​​structure for the air duct and changes the profile of the volute side plate to increase the size of the air duct and the fan, thereby increasing the air volume of the housing assembly and solving the problem of low air volume caused by the installation space of the housing assembly. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of a first embodiment of the air duct according to the present invention is shown;

[0020] Figure 2 A schematic diagram of the structure of a second embodiment of the air duct according to the present invention is shown;

[0021] Figure 3 A structural schematic diagram of an embodiment of the housing assembly according to the present invention is shown;

[0022] Figure 4 A structural schematic diagram of an embodiment of the spliced ​​volute according to the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 1. Shell;

[0025] 11. Air duct; 111. Volute air duct; 112. Exhaust air duct; 113. Exhaust side panel; 12. Air outlet; 13. Connector;

[0026] 2. Volute side plates;

[0027] 21. Opening; 22. Cochlear tongue; 23. First cochlear segment; 24. Second cochlear segment; 25. Third cochlear segment; 26. Fourth cochlear segment;

[0028] 3. Assemble the volute shell;

[0029] 31. Splicing panel; 32. Interlocking protrusion; 33. Flanged edge;

[0030] 4. Fan. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0035] Combination Figures 1 to 4As shown, according to a specific embodiment of this application, a housing assembly is provided.

[0036] Specifically, the housing assembly includes a housing 1 and a spliced ​​volute 3. The housing 1 has a volute side plate 2 for forming part of the sidewall of the air duct 11, and the volute side plate 2 has an opening 21. The spliced ​​volute 3 is movably connected to the housing 1 so that the spliced ​​volute 3 has a blocking position that blocks the opening 21, and a clearance position away from the opening 21. When the spliced ​​volute 3 is in the blocking position, at least part of the spliced ​​volute 3 is outside the housing 1. The volute side plate 2 includes a first volute segment 23 disposed near the volute tongue 22. The first volute segment 23 has an arc-shaped structure, and the rate of change of curvature of the first volute segment 23 is less than the rate of change of curvature of the spliced ​​volute 3.

[0037] In the embodiments of this application, the volute side plate 2 located inside the housing 1 and the spliced ​​volute 3 located outside the housing 1 are spliced ​​together to form the sidewall of the air duct. Part of the air duct sidewall is located on the outside of the housing 1, increasing the width of the housing 1 while also increasing the flow rate of the air duct 11. Furthermore, the air duct 11 is designed as a spliced ​​structure, and the position of the spliced ​​volute is controlled according to the installation environment, thus ensuring that the installation space is not limited even when the size of the housing assembly is increased. The rate of change of curvature of the first volute segment 23 is less than that of the spliced ​​volute 3. Based on the growth rate of the volute radius corresponding to the first volute segment 23, the growth rate of the volute radius corresponding to the spliced ​​volute 3 is further increased. That is, with a fixed fan 4 size, the size of the air duct 11 is further increased to further increase the airflow of the housing assembly. In addition, while the size of the air duct 11 increases, the size of the fan 4 installed inside the air duct 11 can be increased accordingly without exceeding the size of the housing 1, further increasing the airflow of the volute. The above-mentioned housing assembly uses a spliced ​​structure for the air duct 11 and changes the profile of the volute side plate to increase the size of the air duct 11 and the fan size, thereby increasing the air volume of the housing assembly and solving the problem of low air volume caused by the installation space of the housing assembly.

[0038] As will be understood by those skilled in the art, the housing assembly is installed in the ceiling space of an interior, which is typically formed by an integrated ceiling or large panel enclosure.

[0039] In one exemplary embodiment of this application, the air duct includes a volute air duct 111 and an outlet air duct 112. The outlet air duct 112 is connected to the volute air duct 111 along the length of the housing, and serves as the outlet of the volute air duct 111. An outlet side plate 113 is also provided inside the housing 1, and the outlet side plate 113 is connected to the volute side plate along the length of the housing 1. The outlet side plate 113, the bottom plate of the housing 1, and the air collecting plate together form the outlet air duct. An air outlet 12 is located in the outlet air duct 112, meaning the air outlet 12 is the outlet of both the outlet air duct 112 and the volute air duct 111. The volute air duct 111 can have a spiral shape that is one or more of the following: an involute, an Archimedean spiral, a multi-segment circular arc, and a zigzag line.

[0040] Furthermore, the air collecting plate, as part of the air duct, blocks one side of the air duct. Specifically, the volute side plate 2, the spliced ​​volute 3, the air collecting plate, and the bottom plate of the shell 1 together form the volute air duct 111, wherein the air inlet of the volute air duct 111 is opened on the air collecting plate.

[0041] In one exemplary embodiment of this application, the volute side plate 2 further includes a second volute segment 24 disposed away from the volute tongue 22, the second volute segment 24 having an arc-shaped structure.

[0042] Furthermore, when the spliced ​​volute 3 is in the blocking position, the second volute segment 24 is located between the first volute segment 23 and the spliced ​​volute 3.

[0043] Furthermore, the rate of change of curvature of the second volute segment 24 is greater than that of the first volute segment 23, and less than or equal to that of the spliced ​​volute 3.

[0044] Specifically, such as Figure 1 As shown, the volute side plate 2 includes a first volute segment 23, a second volute segment 24, and a fourth volute segment 26. The first volute segment 23 forms a volute tongue 22 with the outlet side of the volute side plate 2. The second volute segment 24 extends to the opening 21 of the volute side plate 2, and the edge of the second volute segment 24 smoothly transitions to the edge of the first volute segment 23 to reduce vortex separation and energy loss, thereby reducing noise. The rate of change of curvature of the profile of the second volute segment 24 is greater than that of the first volute segment 23. That is, based on the rate of increase of the volute radius corresponding to the first volute segment 23, the rate of increase of the volute radius corresponding to the second volute segment 24 is further increased, i.e., the air volume of the housing assembly is increased by further increasing the size of the air duct. The rate of change of curvature of the profile of the second volute segment 24 is less than or equal to the rate of change of curvature of the profile of the spliced ​​volute 3, so that the connection between the second volute segment 24 and the spliced ​​volute 3 is a smooth transition, thereby reducing vortex separation and energy loss, and reducing noise.

[0045] When the spliced ​​volute 3 is in the blocked position, its edge smoothly transitions to the edge of the opening 21. Specifically, the edge of the spliced ​​volute 3 smoothly transitions to the edge of the fourth volute segment 26, and also smoothly transitions to the edge of the second volute segment 24, to reduce eddy current separation and energy loss, and lower noise. Furthermore, the rate of change of curvature of the fourth volute segment 26 is greater than or equal to the rate of change of curvature of the spliced ​​volute 3, so that the connection between the fourth volute segment 26 and the spliced ​​volute 3 is smooth, further reducing eddy current separation and energy loss, and lowering noise.

[0046] Preferably, the curvature change rate of the first volute segment 23 is 0, meaning the volute radius corresponding to the first volute segment 23 is a fixed value. This configuration allows for a further increase in the size of the fan 4, thereby further increasing the airflow of the housing assembly.

[0047] In another exemplary embodiment of this application, the volute side plate 2 further includes a third volute segment 25, which is connected between the first volute segment 23 and the second volute segment 24. The third volute segment 25 is disposed opposite to the opening 21, and the profile of the third volute segment 25 is a straight line.

[0048] Specifically, such as Figure 2 As shown, the volute side plate 2 includes a first volute segment 23, a second volute segment 24, a third volute segment 25, and a fourth volute segment 26. The first volute segment 23 forms a volute tongue 22 with the outlet side of the volute side plate 2. The third volute segment 25 connects the first volute segment 23 and the second volute segment 24. The second volute segment 24 extends to the opening 21 of the volute side plate 2. The third volute segment 25 is positioned opposite to the opening 21, and its profile is a straight line. Under the premise that the volute size remains unchanged, this configuration can reduce the overall width of the volute, facilitating installation. In other words, this configuration allows the housing to accommodate larger volute side plates 2 and spliced ​​volutes 3, thereby increasing the airflow of the housing assembly.

[0049] When the spliced ​​volute 3 is in the blocked position, its edge smoothly transitions to the edge of the opening 21. Specifically, the edge of the spliced ​​volute 3 smoothly transitions to the edge of the fourth volute segment 26, and also smoothly transitions to the edge of the second volute segment 24, to reduce eddy current separation and energy loss, and lower noise. Furthermore, the rate of change of curvature of the fourth volute segment 26 is greater than or equal to the rate of change of curvature of the spliced ​​volute 3, so that the connection between the fourth volute segment 26 and the spliced ​​volute 3 is smooth, further reducing eddy current separation and energy loss, and lowering noise.

[0050] Furthermore, such as Figure 2As shown, the minimum distance between the sidewall of the volute tongue 22 and the center point of the air duct is L1, and the distance between the third volute segment 25 and the center point of the air duct is L2, where L1 = L2. That is, the distance between the starting point of the volute tongue 22 and the center point of the air duct is the minimum radius of the volute, and the formation position of the third volute segment 25 is designed with reference to the minimum radius of the volute.

[0051] Specifically, such as Figure 2 As shown, a fan 4 is installed at the center of the air duct. The radius of the fan 4 is R, and the minimum distance between the fan 4 and the side wall of the volute tongue 22 is L3, where L1=R+L3, 7mm≤L3≤10mm. The distance between the starting point of the volute tongue 22 and the edge of the fan 4 is L3.

[0052] Preferably, the edge of the third volute segment 25 is smoothly transitioned to the edges of the first volute segment 23 and the second volute segment 24, respectively. This arrangement ensures a smooth and continuous volute profile without abrupt changes, reducing eddy current separation and energy loss, and lowering noise.

[0053] Preferably, the curvature change rate of the first volute segment 23 is 0, meaning the volute radius corresponding to the first volute segment 23 is a fixed value. This configuration allows for a further increase in the size of the fan 4, thereby further increasing the airflow from the volute.

[0054] Furthermore, in the above embodiment, the width of the housing 1 is W, where 270mm ≤ W ≤ 300mm. That is, the width of the air duct formed by the volute side plate 2 and the spliced ​​volute 3 is greater than the width of the housing 1. Compared with the housing assembly in the prior art, the air volume of the housing assembly in this embodiment is significantly improved.

[0055] In another exemplary embodiment of this application, the splicing volute 3 is detachably connected to the housing 1.

[0056] Specifically, such as Figure 3 As shown, the splicing volute 3 also includes a splicing plate 31, which is arranged around the open end of the splicing volute. One long side of the splicing plate 31 has an insertion protrusion 32, and the other long side of the splicing plate 31 has a flange 33, which is perpendicular to the splicing plate 31. Figure 4 As shown, the edge of the housing 1 is provided with an insertion interface 13. The axial direction of the insertion interface 13 extends along the height direction of the housing 1. When the splicing volute 3 is in the blocking position, the splicing plate 31 fits against the side wall of the housing 1, the insertion protrusion 32 is inserted into the insertion interface 13 for limiting, and the flange 33 fits against the bottom wall of the housing 1. The flange 33 is connected to the bottom wall of the housing 1 by screws.

[0057] During the installation of the housing assembly, the splicing volute 3 is first installed at the installation base, and then the splicing volute 3 is moved to the installation base and connected to the splicing volute 3.

[0058] According to another specific embodiment of this application, a ceiling-mounted electrical appliance is provided, which includes a housing assembly, the housing assembly being the same as that described in the above embodiments. The ceiling-mounted electrical appliance includes, but is not limited to, air outlet devices such as kitchen air conditioners, non-kitchen air conditioners, bathroom heaters, and fresh air systems.

[0059] In a specific embodiment of this application, a bathroom heater is provided, wherein the housing is the outer shell of the bathroom heater main unit, and the volute side plate of the air duct is formed in the housing, and the air duct and the housing are two independently set components. Of course, the volute side plate can also be set as a plate structure, and the air duct is formed between the volute side plate and the side wall and bottom plate of the housing. Specifically, an air collecting hood is provided on the side of the housing opposite to the bottom, and a panel is provided on the outer side of the air collecting hood. The lamp assembly is located on the side where the air collecting hood and the panel are located.

[0060] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0061] 1. The volute side plate 2 located inside the housing 1 and the spliced ​​volute 3 located outside the housing 1 form the side wall of the air duct. By setting part of the air duct side wall on the outside of the housing 1, the width of the housing 1 is increased, and the internal flow rate of the air duct 11 is also increased. At the same time, the air duct is designed as a spliced ​​structure, and the position of the spliced ​​volute is controlled according to the installation environment, so that even if the size of the housing components is increased, the installation space will not be limited.

[0062] 2. The rate of change of curvature of the first volute segment 23 is less than that of the spliced ​​volute 3. Based on the growth rate of the volute radius corresponding to the first volute segment 23, the growth rate of the volute radius corresponding to the spliced ​​volute 3 is further increased. That is, under the premise that the size of the fan 4 is fixed, the size of the air duct is further increased to further increase the air volume of the housing assembly.

[0063] 3. As the size of the air duct increases, the size of the fan 4 installed in the air duct can be increased accordingly without exceeding the size of the housing 1, so as to further increase the air volume of the housing assembly.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of 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 connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0066] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A housing assembly, characterized in that, include: The housing (1) has a volute side plate (2) for forming part of the sidewall of the air duct (11), and the volute side plate (2) is provided with an opening (21); A splicing volute (3) is movably connected to the housing (1) so that the splicing volute (3) has a blocking position that blocks the opening (21) and a clearance position away from the opening (21). When the splicing volute (3) is in the blocking position, at least a portion of the splicing volute (3) is outside the housing (1). The volute side plate (2) includes a first volute segment (23) located near the volute tongue (22). The first volute segment (23) has an arc-shaped structure, and the rate of change of the curvature of the first volute segment (23) is less than the rate of change of the curvature of the spliced ​​volute (3).

2. The housing assembly according to claim 1, characterized in that, The volute side plate (2) also includes a second volute segment (24) disposed away from the volute tongue (22), the second volute segment (24) being an arc-shaped structure.

3. The housing assembly according to claim 2, characterized in that, When the spliced ​​volute (3) is located at the blocking position, the second volute segment (24) is located between the first volute segment (23) and the spliced ​​volute (3).

4. The housing assembly according to claim 3, characterized in that, The rate of change of the curvature of the second volute segment (24) is greater than that of the first volute segment (23), and less than or equal to that of the spliced ​​volute (3).

5. The housing assembly according to any one of claims 2-4, characterized in that, The volute side plate (2) further includes a third volute segment (25), which is connected between the first volute segment (23) and the second volute segment (24). The third volute segment (25) is disposed opposite to the opening (21), and the profile of the third volute segment (25) is a straight line.

6. The housing assembly according to claim 5, characterized in that, The minimum distance between the sidewall of the volute tongue (22) and the center point of the air duct (11) is L1, and the distance between the third volute segment (25) and the center point of the air duct (11) is L2, where L1 = L2.

7. The housing assembly according to claim 5, characterized in that, A fan (4) is installed at the center of the air duct (11). The radius of the fan (4) is R. The minimum distance between the fan (4) and the side wall of the volute tongue (22) is L3, where L1=R+L3, 7mm≤L3≤10mm.

8. The housing assembly according to claim 5, characterized in that, The edge of the third volute segment (25) is smoothly transitioned to the edge of the first volute segment (23) and the edge of the second volute segment (24), respectively.

9. The housing assembly according to any one of claims 1-4 or any one of claims 6-8, characterized in that, The curvature of the first volute segment (23) has a rate of change of 0.

10. The housing assembly according to any one of claims 1-4 or any one of claims 6-8, characterized in that, The width of the shell (1) is W, 270mm≤W≤300mm.

11. The housing assembly according to claim 1, characterized in that, When the spliced ​​volute (3) is located at the blocking position, the edge of the spliced ​​volute (3) is smoothly transitioned to the edge of the opening (21).

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

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