Lift smoke machine

Abstract

The embodiment of the present application provides a lifting smoke machine. The lifting smoke machine comprises a fan box, a smoke collecting box provided with a smoke collecting port, a lifting guide rail and a driving assembly, the smoke collecting box is connected to the fan box through the lifting guide rail, the smoke collecting box is liftable between a lifting position of hiding the smoke collecting port and a lowering position of exposing the smoke collecting port under the driving of the driving assembly, a first reinforcing rib is arranged on the sidewall of the fan box in a curved manner, a second reinforcing rib is arranged on the sidewall of the smoke collecting box in a curved manner, the lifting guide rail comprises a guide rail and a sliding connecting piece, and the reinforcing ribs can provide stable fixing surfaces for the guide rail and the sliding connecting piece. When the sliding connecting piece is slidingly connected to the guide rail, the two can be installed on the fixing surfaces with higher strength, the stability of sliding is improved, and the shaking and deviation phenomena in the sliding process are avoided. The noise caused by unstable lifting is avoided. The stability of lifting of the lifting smoke machine is improved. The user experience is improved.

Description

Technical Field

[0001] This invention relates to the technical field of smoke hoods, and more specifically, to a lifting smoke hood. Background Technology

[0002] As people demand higher and higher quality of life, range hoods have basically become an indispensable household item.

[0003] Lift-type range hoods are increasingly favored by users due to their superior fume extraction efficiency and small footprint. Existing lift-type range hoods consist of a housing and a driver unit housed within the housing. The driver unit moves the smoke collection module of the lift-type range hood up and down. The housing and the smoke collection module are connected together via a guide rail assembly. During the lifting process, the guide rail assembly guides the movement of the smoke collection module.

[0004] However, existing lift-type smoke hoods commonly experience vibration, misalignment, and jamming during the lifting process, resulting in an unstable lifting operation. These issues cause inconvenience to users and reduce their overall experience. Summary of the Invention

[0005] To at least partially address the problems existing in the prior art, according to one aspect of the present invention, a lifting smoke hood is provided. The lifting smoke hood includes a fan housing, a smoke collection housing, a lifting guide rail, and a drive assembly. The smoke collection housing is connected to the fan housing via the lifting guide rail. The smoke collection housing is provided with a smoke collection port. Driven by the drive assembly, the smoke collection housing can be raised and lowered between a raised position with the smoke collection port concealed and a lowered position with the smoke collection port exposed. A first reinforcing rib formed by bending is provided on the side wall of the fan housing, and a second reinforcing rib formed by bending is provided on the side wall of the smoke collection housing. The lifting guide rail includes a guide rail disposed on the first reinforcing rib and a sliding connector disposed on the second reinforcing rib, the sliding connector being slidably connected to the guide rail.

[0006] The lifting guide rail of this application's lifting range hood is mounted on a first reinforcing rib, and the sliding connector is mounted on a second reinforcing rib. This allows the first and second reinforcing ribs to provide stable fixing surfaces for the guide rail and the sliding connector, respectively. When the sliding connector slides onto the guide rail, both can be mounted on a stronger fixing surface, improving the stability of the sliding between the sliding connector and the guide rail and preventing shaking or misalignment during sliding. Therefore, the lifting guide rail allows the smoke collection box to rise and fall stably, avoiding noise caused by unstable lifting. This further improves the stability of the lifting range hood and enhances the user experience. Furthermore, when the smoke collection box is in the raised position, the smoke collection port can be concealed, reducing dust accumulation at the smoke collection port and decreasing the frequency of cleaning by the user.

[0007] For example, the first reinforcing rib includes a first sidewall and a second sidewall facing the smoke collection box, with an included angle between the first sidewall and the second sidewall. The guide rail includes a first guide rail disposed on the first sidewall and a second guide rail disposed on the second sidewall. The sliding connector includes a first sliding connector slidably connected to the first guide rail and a second sliding connector slidably connected to the second guide rail. By increasing the number of guide rails, the stability of the guide rail operation is further improved; this, in turn, improves the stability of the lifting of the smoke collection box of the lifting smoke fan, and also prevents the smoke collection box from swaying relative to the fan housing when the fan is working. In addition, there are usually assembly gaps between the first sliding connector and the first guide rail, and between the second sliding connector and the second guide rail. The inventors discovered that the first guide rail and the second guide rail are of the same type, so that when the two guide rails are placed in the same posture, the direction of swaying that may occur between them and their respective sliding connectors in the horizontal direction is basically the same. By installing the first guide rail and the second guide rail on the first side wall and the second side wall located on different planes, the possible swaying directions between the guide rail and its corresponding sliding connector become different. Under the action of the reinforcing rib, the degree of freedom of movement of the two sliding connectors relative to their respective guide rails is reduced, thus preventing the smoke collection box from swaying relative to the fan box.

[0008] For example, the included angles between the first and second sidewalls and the sidewall containing the first reinforcing rib of the fan housing are equal. Even if the smoke collection box vibrates during lifting or when the fan is operating, in the horizontal direction, the horizontal component of the force exerted by the first sidewall on the first guide rail parallel to the rear wall of the fan housing and the horizontal component of the force exerted by the second sidewall on the second guide rail parallel to the rear wall of the fan housing can largely cancel each other out. Furthermore, the swaying of the first sliding connector relative to the first guide rail and the swaying of the second sliding connector relative to the second guide rail can also largely cancel each other out, thereby further ensuring that the lifting of the smoke collection box is more stable, and that the smoke collection box does not vibrate significantly during the operation of the fan.

[0009] For example, the included angle between the first sidewall and the second sidewall is a right angle or an obtuse angle. In this way, the first guide rail and the second guide rail can be installed on the first sidewall and the second sidewall located on different planes, and the horizontal distance between the first guide rail and the second guide rail can be increased. This is equivalent to providing guidance at different spaced-out positions, which not only reduces the degree of freedom of movement of the two sliding connectors relative to their respective guide rails, but also strengthens the guiding effect and further prevents the smoke collection box from swaying relative to the fan box.

[0010] For example, the second reinforcing rib includes a third sidewall parallel to the first sidewall and a fourth sidewall parallel to the second sidewall. A first sliding connector and a second sliding connector are respectively disposed on the third and fourth sidewalls, forming a V-shaped slit between the third and fourth sidewalls and the first and second sidewalls. The lifting guide rail is located within the V-shaped slit. This configuration allows the first and second sidewalls to form a V-shaped structure, further enhancing the strength of the sidewalls containing the first and second sidewalls on the fan housing. The V-shaped structure of the third and fourth sidewalls also further enhances the strength of the sidewalls containing the first and second sidewalls on the smoke collection box. Overall, the strength of the sidewalls of the smoke collection box and the fan housing is improved, thus preventing the lifting guide rail from jamming due to insufficient strength. The third and fourth sidewalls, along with the first and second sidewalls, can also function as a protective cover. The lifting guide rail being located within the V-shaped slit prevents external dust or other contaminants from falling into the lifting guide rail, further protecting it.

[0011] For example, the second reinforcing rib includes a fifth sidewall connected between the third and fourth sidewalls, and parallel to the sidewall of the smoke collection box where the second reinforcing rib is located. Connecting the third and fourth sidewalls with the fifth sidewall allows for more bends in the second reinforcing rib, thus further increasing its strength. Moreover, the fifth sidewall typically extends into the interior of the smoke collection box. Compared to a direct connection between the third and fourth sidewalls, connecting them with the fifth sidewall avoids the formation of sharp corners inside the smoke collection box, preventing interference with airflow. Furthermore, since the fifth sidewall is parallel to the sidewall of the smoke collection box where the second reinforcing rib is located, it can be considered part of the sidewall directly opposite the sidewall of the second reinforcing rib, serving as a load-bearing surface and facilitating the installation of necessary components.

[0012] For example, a bracket is provided inside the smoke collection box, and the fifth side wall is connected to the side wall of the smoke collection box where the second reinforcing rib is not located via the bracket. This arrangement further enhances the strength of the second reinforcing rib by connecting the fifth side wall and the bracket, thereby increasing the stability of the lifting guide rail during lifting.

[0013] For example, a bracket is provided inside the smoke collection box, and the second reinforcing rib is connected to the side wall of the smoke collection box where the second reinforcing rib is not located via the bracket. With this configuration, the second reinforcing rib is not only connected to one side wall of the smoke collection box, but also connected to the side wall where the second reinforcing rib is not located via the bracket. In other words, the second reinforcing rib can be connected to the smoke collection box in two locations, and the bracket further improves the strength and stability of the second reinforcing rib.

[0014] For example, the second reinforcing rib is disposed on the rear wall of the smoke collection box. The bracket includes: a bracket rear wall, which is connected to the second reinforcing rib; a first bracket side wall and a second bracket side wall extending forward from both sides of the bracket rear wall, the first bracket side wall, the second bracket side wall, and the bracket rear wall being connected to form a U-shape; and a first bracket front wall and a second bracket front wall extending from the front side of the first bracket side wall and the second bracket side wall respectively, which are connected to the front wall of the smoke collection box. The lifting smoke machine of this application, by setting a U-shaped bracket, with the first and second bracket front walls connected to the front wall of the smoke collection box and the bracket rear wall connected to the second reinforcing rib, effectively shortens the lateral length of the lifting smoke machine, thereby improving its stability. Furthermore, the second reinforcing rib can be disposed on the rear wall of the smoke collection box, protecting the user's operational safety. Simultaneously, the second reinforcing rib allows for a wider design flexibility. Additionally, the user will not be able to directly observe the rear wall of the smoke collection box in real time, improving the user experience.

[0015] Exemplarily, the sidewall of the fan housing is bent toward the smoke collection box to form a first reinforcing rib, and the sidewall of the smoke collection box is bent toward the interior of the smoke collection box to form a second reinforcing rib. With this configuration, the first reinforcing rib and the sidewall of the fan housing are an integral structure, facilitating its direct formation on the sidewall of the fan housing. Typically, in embodiments where the sidewall of the fan housing of the lifting smoke hood is a sheet metal part, the processing of the first reinforcing rib is very convenient. Similarly, the second reinforcing rib and the sidewall of the smoke collection box are an integral structure, facilitating its direct formation on the sidewall of the smoke collection box. Typically, in embodiments where the sidewall of the smoke collection box of the lifting smoke hood is a sheet metal part, the processing of the second reinforcing rib is very convenient. Furthermore, the first reinforcing rib formed by bending the sidewall of the fan housing toward the smoke collection box can be closer to the smoke collection box, shortening the distance between the first reinforcing rib and the smoke collection box. This allows for the selection of smaller guide rails, facilitating a thinner and lighter design of the fan housing and reducing manufacturing costs. In addition, the first reinforcing rib has a convex structure facing the smoke collection box, and the second reinforcing rib has a concave structure facing the side wall of the smoke collection box. The first and second reinforcing ribs can form a relatively closed receiving space, which is conducive to the guide rail and sliding connector being accommodated in this receiving space, and plays a certain protective role for the guide rail and sliding connector.

[0016] For example, multiple lifting guide rails are arranged at horizontal intervals, and the drive assembly is positioned between these multiple lifting guide rails. This arrangement ensures that the drive assembly has lifting guide rails on both sides. When the drive assembly raises and lowers the smoke collection box, the lifting guide rails on both sides of the drive assembly can guide the smoke collection box, improving the stability of the raising and lowering process.

[0017] For example, the lifting guide rail is located on the outside of the smoke collection box. In this way, the lifting guide rail is not connected to the smoke collection channel inside the smoke collection box. The oil fumes flow within the smoke collection channel, avoiding oil fume contamination of the lifting guide rail. This prevents the lifting guide rail from getting stuck due to oil fume contamination, providing excellent protection for the lifting guide rail and improving its operational durability, thereby extending its service life.

[0018] A series of simplified concepts are introduced in the description of the invention, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0019] The advantages and features of the present invention will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] The following figures are included as part of this invention for understanding its principles. The figures illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the figures,

[0021] Figure 1 This is an isometric view of a smoke-lifting machine in a descending position according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The image shown is an isometric view of the lifting range hood in its ascending position.

[0023] Figure 3 for Figure 1 Another isometric view of the smoke lift shown;

[0024] Figure 4 for Figure 1 Another isometric view of the smoke lift shown (with the front wall of the smoke collection box removed);

[0025] Figure 5 for Figure 1 The cross-sectional view of the smoke extraction fan shown (with the front wall of the smoke collection box and part of the fan box removed);

[0026] Figure 6 for Figure 3 The sectional view shown (with the rear wall of the fan housing removed);

[0027] Figure 7 for Figure 1 The cross-sectional view of the lifting smoke machine shown;

[0028] Figure 8 for Figure 7 A partial view; and

[0029] Figure 9 for Figure 1 The front view of the support frame for the lifting range hood is shown.

[0030] The above figures include the following reference numerals:

[0031] 10. Lifting smoke fan; 100. Fan housing; 110. Rear wall of fan housing; 200. Smoke collection box; 210. Rear wall of smoke collection box; 220. Front wall of smoke collection box; 230. Smoke collection port; 300. Lifting guide rail; 310. Guide rail; 311. First guide rail; 312. Second guide rail; 320. Sliding connector; 321. First sliding connector; 322. Second sliding connector; 400. Drive assembly; 500. First reinforcing rib; 510. First side wall; 520. Second side wall; 600. Second reinforcing rib; 610. Third side wall; 620. Fourth side wall; 630. Fifth side wall; 700. Bracket; 710. Rear wall of bracket; 720. Side wall of first bracket; 730. Side wall of second bracket; 740. Front wall of first bracket; 750. Front wall of second bracket. Detailed Implementation

[0032] In the following description, numerous details are provided to enable a thorough understanding of the invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the invention, and that the invention can be practiced without one or more of these details. Furthermore, to avoid obscuring the invention, some technical features well-known in the art have not been described in detail.

[0033] To fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below; however, in addition to these detailed descriptions, the present invention may have other embodiments.

[0034] According to one aspect of the present invention, a lifting smoke hood is provided. For example... Figure 1 , Figures 3 to 7 As shown, the lifting smoke fan 10 may include a fan housing 100 and a smoke collection housing 200. For example... Figure 6-7 As shown, a fan 120 can be installed inside the fan housing 100. The smoke collection housing 200 typically has one or more smoke collection ports 230 (see...). Figure 1 and Figure 5 The smoke collection port 230 can be located at the bottom or front of the smoke collection box 200; this is not limited. The lifting smoke machine 10 may also include a lifting guide rail 300 and a drive assembly 400, such as... Figure 5-6As shown. The smoke collection box 200 can be connected to the fan box 100 via the lifting guide rail 300. Driven by the drive assembly 400, the smoke collection box 200 can be raised and lowered between the raised position of the concealed smoke collection port 230 and the lowered position of the exposed smoke collection port 230. The drive assembly 400 can be a DC push rod structure, screw, chain, or electric telescopic rod, etc., and is not limited here.

[0035] The rising and falling positions of the smoke collection box 200 can be limited by a limiting structure. In some optional embodiments, the limiting structure may include a limiting part and a limiting adapter part. The limiting part may be disposed on the smoke collection box 200, and the limiting adapter part may be disposed on the fan box 100. The limiting part and the limiting adapter part cooperate to limit the rising and falling positions of the smoke collection box 200. In some more specific embodiments, some limiting structures can also serve a positioning function. For example, the limiting part of the limiting structure can be an elastic protrusion, and the limiting adapter part can include a first groove and a second groove. The elastic protrusion can be disposed on the smoke collection box 200, and the first groove can be disposed on the fan box 100. When the smoke collection box 200 descends to the lowered position, the elastic protrusion can be embedded in the first groove, at which time the limiting structure can keep the smoke collection box 200 in the lowered position. In addition, when it is necessary to move to the raised position, under the drive of the drive component 400, the elastic protrusion can overcome the resistance of the groove and disengage from the first groove. When the smoke collection box 200 moves to the raised position, the elastic protrusion can be embedded in the second groove, at which time the limiting structure can keep the smoke collection box 200 in the raised position. In other embodiments, the limiting structure can be a stop on the lifting guide rail 300. When the slider of the lifting guide rail 300 moves to the stop, it is stopped by the stop, thereby achieving the limitation of the raised and lowered positions. In some embodiments, a limiting structure may be provided on the drive component 400 to limit the upward and downward positions through the drive stroke. The limiting structure may be one or a combination of the above, and no limitation is made here.

[0036] When the range hood 10 needs to be lowered to extract cooking fumes, the smoke collection box 200 can be lowered to a suitable height above the cooking appliances via the drive assembly 400 (see...). Figure 1 Meanwhile, under the action of the fan 120 inside the fan housing 100, a negative pressure environment is formed near the smoke collection port 230. At this time, the oil fumes generated by the cooking utensils below the range hood 10 are drawn into the smoke collection channel of the smoke collection housing 200 through the smoke collection port 230, then enter the fan housing 100, and finally are guided by the fan 120 to the exhaust port 130 of the fan housing 100 (see...). Figure 1 and Figure 2(As shown) Exhaust smoke lift fan 10. When the exhaust smoke lift fan 10 is not needed, the smoke collection box 200 can be raised into the fan box 100 via the drive assembly 400 (see...). Figure 2 This design frees up more space; moreover, when the smoke collection box 200 is in the raised position, the smoke collection port 230 can be hidden, reducing dust accumulation at the smoke collection port 230 and decreasing the frequency of cleaning for users. It also makes the application environment of the lifting range hood 10 more tidy and aesthetically pleasing.

[0037] For example, the lifting guide rail 300 can be located on the outside of the smoke collection box 200. In this way, the lifting guide rail 300 is not connected to the smoke collection channel inside the smoke collection box 200. The oil fumes flow within the smoke collection channel, preventing oil fume contamination of the lifting guide rail 300. This avoids the lifting guide rail 300 from jamming due to oil fume contamination, providing excellent protection for the lifting guide rail 300 and improving its operational durability; thus, it extends the service life of the lifting guide rail 300.

[0038] A first reinforcing rib 500, formed by bending, may be provided on the side wall of the fan housing 100. It is understood that the first reinforcing rib 500 may be provided on one or more of the front wall, rear wall 110, left wall, or right wall of the fan housing 100; no limitation is made here. It should be noted that the directional term "front" as described here and below refers to the side of the lifting range hood 10 closest to the user when it is installed in the application scenario and in operation. The directional term "rear" as described here and below refers to the side furthest from the user. The directional term "left" as described here and below refers to the user's left side when facing the lifting range hood 10. The directional term "right" as described here and below refers to the user's right side when facing the lifting range hood 10. The first reinforcing rib 500 may have various bending shapes, such as V-shape, U-shape, etc.; no limitation is made here. Compared to the existing flat sidewalls of the fan housing 100, the bent first reinforcing rib 500 can have higher strength, and at the same time, it also improves the strength of the sidewalls of the fan housing 100. The first reinforcing rib 500 and the sidewalls of the fan housing 100 can be integrally formed or separately formed and then connected together, which is not limited here. Typically, in embodiments where the sidewalls of the fan housing 100 are sheet metal parts, the first reinforcing rib 500 can be manufactured from the sidewalls of the fan housing 100 using sheet metal processing. The sidewalls of the smoke collection box 200 can be provided with a bent second reinforcing rib 600. It is understood that the second reinforcing rib 600 can be provided on one or more of the front wall 220, rear wall, left side wall, or right side wall of the smoke collection box 200, which is not limited here. The second reinforcing rib 600 can have various bending shapes, such as V-shape, U-shape, etc., which is not limited here. The second reinforcing rib 600 and the side wall of the smoke collection box 200 can be integrally formed or separately formed and then connected together; there is no limitation here. For example, when the range hood 10 is installed in the kitchen, the rear wall 210 of the smoke collection box 200 is usually closer to the kitchen wall.

[0039] like Figure 7As shown, the lifting guide rail 300 may include a guide rail 310 and a sliding connector 320. The lifting guide rail 300 may be any one of a ball bearing guide rail, roller guide rail, pulley guide rail, or coaxial guide column, without limitation. Exemplarily, there may be multiple lifting guide rails 300, which are spaced apart in the horizontal direction. Multiple lifting guide rails 300 may be of the same type, which facilitates unified procurement and subsequent maintenance and replacement. This application also includes embodiments with multiple lifting guide rails 300 using different types of lifting guide rails. The drive assembly 400 may be disposed between multiple lifting guide rails 300. With this arrangement, there are lifting guide rails 300 on both sides of the drive assembly 400. When the drive assembly 400 drives the smoke collection box 200 to rise and fall, the lifting guide rails 300 located on both sides of the drive assembly 400 can guide the smoke collection box 200, improving the stability of the lifting process. The guide rail 310 may be disposed on the first reinforcing rib 500. Thus, the first reinforcing rib 500 serves as the bearing surface of the guide rail 310, providing a more stable fixing surface and preventing vibration, misalignment, and jamming during operation. The sliding connector 320 can be mounted on the second reinforcing rib 600. The sliding connector 320 is slidably connected to the guide rail 310. Similarly, the second reinforcing rib 600 serves as the bearing surface of the sliding connector 320, providing a more stable fixing surface and preventing vibration, misalignment, and jamming during operation.

[0040] The lifting guide rail 310 of the lifting range hood 10 of this application is mounted on the first reinforcing rib 500, and the sliding connector 320 is mounted on the second reinforcing rib 600. Thus, the first reinforcing rib 500 and the second reinforcing rib 600 can provide stable fixing surfaces for the guide rail 310 and the sliding connector 320, respectively. When the sliding connector 320 slides onto the guide rail 310, both can be mounted on a stronger fixing surface, improving the stability of the sliding between the sliding connector 320 and the guide rail 310 and preventing shaking or misalignment during sliding. Therefore, the lifting guide rail 300 allows the smoke collection box 200 to rise and fall stably, avoiding noise caused by unstable rising and falling. This further improves the stability of the lifting range hood 10 and enhances the user experience. Moreover, when the smoke collection box 200 is in the raised position, the smoke collection port 230 can be hidden, reducing dust accumulation at the smoke collection port 230 and reducing the frequency of cleaning by the user.

[0041] For example, such as Figure 5As shown, the sidewall of the fan housing 100 can be bent toward the smoke collection box 200 to form a first reinforcing rib 500. Thus, the first reinforcing rib 500 is directly formed by bending the sidewall of the fan housing 100, and the first reinforcing rib 500 and the sidewall of the fan housing 100 are an integral structure; moreover, the first reinforcing rib 500 has a convex structure facing toward the smoke collection box 200. The sidewall of the smoke collection box 200 can be bent toward the interior of the smoke collection box 200 to form a second reinforcing rib 600. Thus, the second reinforcing rib 600 is directly formed by bending the sidewall of the smoke collection box 200, and the second reinforcing rib 600 and the sidewall of the smoke collection box 200 are an integral structure; moreover, the second reinforcing rib 600 has a concave structure facing toward the sidewall of the smoke collection box 200. By setting both the first reinforcing rib 500 and the second reinforcing rib 600 to bend inward toward the smoke collection box 200, compared to bending outward, it is possible to avoid occupying too much space at the rear, thereby reducing the depth of the smoke collection box 200 and the fan box 100. As mentioned above, a guide rail 310 can be provided on the first reinforcing rib 500, and a sliding connector 320 slidably connected to the guide rail 310 can be provided on the second reinforcing rib 600. With this configuration, the first reinforcing rib 500 and the side wall of the fan box 100 are integrally formed, facilitating the direct formation of the first reinforcing rib 500 on the side wall of the fan box 100. Typically, in embodiments where the side wall of the fan box 100 of the lifting smoke fan 10 is a sheet metal part, the processing of the first reinforcing rib 500 is very convenient. Similarly, the second reinforcing rib 600 and the side wall of the smoke collection box 200 are integrally formed, facilitating the direct formation of the second reinforcing rib 600 on the side wall of the smoke collection box 200. Typically, in embodiments where the side wall of the smoke collection box 200 of the lifting smoke fan 10 is a sheet metal part, the processing of the second reinforcing rib 600 is very convenient. Furthermore, the first reinforcing rib 500, formed by bending the side wall of the fan housing 100 towards the smoke collection box 200, can be closer to the smoke collection box 200, shortening the distance between the first reinforcing rib 500 and the smoke collection box 200. This allows for the selection of smaller guide rails, facilitating a thinner and lighter design of the fan housing 100 and reducing manufacturing costs. In addition, the first reinforcing rib 500 has a convex structure facing the smoke collection box 200, while the second reinforcing rib 600 has a concave structure facing the side wall of the smoke collection box 200. The first reinforcing rib 500 and the second reinforcing rib 600 can form a relatively enclosed receiving space, which facilitates the accommodation of the guide rail 310 and the sliding connector 320 within this space, providing a certain degree of protection for the guide rail 310 and the sliding connector 320.

[0042] For example, such as Figures 5 to 7 As shown, the first reinforcing rib 500 may include a first sidewall 510 and a second sidewall 520 facing the smoke collection box 200. Figure 8As shown, there is an included angle α between the first sidewall 510 and the second sidewall 520. Exemplarily, the included angle α between the first sidewall 510 and the second sidewall 520 can be a right angle or an obtuse angle. The guide rail 310 may include a first guide rail 311 and a second guide rail 312. The first guide rail 311 may be disposed on the first sidewall 510. The second guide rail 312 may be disposed on the second sidewall 520. The sliding connector 320 may include a first sliding connector 321 and a second sliding connector 322. The first sliding connector 321 may be slidably connected to the first guide rail 311. The second guide rail 312 may be slidably connected to the second sliding connector 322. With the first guide rail 311 disposed on the first sidewall 510 and the second guide rail 312 disposed on the second sidewall 520, the first sliding connector 321 may slide with the first guide rail 311, and the second sliding connector 322 may slide with the second guide rail 312. Thus, two guide rails are provided on the first reinforcing rib 500. By increasing the number of guide rails, the stability of the guide rail operation is further improved; this, in turn, improves the stability of the smoke collection box 200 of the lifting smoke fan 10 during lifting, and also prevents the smoke collection box 200 from swaying relative to the fan box 100 when the fan 120 is working. Furthermore, there are usually assembly gaps between the first sliding connector 321 and the first guide rail 311, and between the second sliding connector 322 and the second guide rail 312. The inventors discovered that the first guide rail 311 and the second guide rail 312 are of the same type, so that when these two guide rails are placed in the same posture, the direction of swaying that may occur between them and their respective sliding connectors in the horizontal direction is basically the same. By installing the first guide rail 311 and the second guide rail 312 on the first side wall 510 and the second side wall 520 located on different planes, the possible swaying directions between the guide rail and its corresponding sliding connector become different. Under the action of the reinforcing rib, the degree of freedom of movement of the two sliding connectors relative to their respective guide rails is reduced, thus preventing the smoke collection box 200 from swaying relative to the fan box 100.

[0043] For example, such as Figure 7As shown, the angle between the first sidewall 510 and the sidewall where the first reinforcing rib 500 of the fan housing 100 is located is β. The angle between the second sidewall 520 and the sidewall where the first reinforcing rib 500 of the fan housing 100 is located is γ. The included angle β and the included angle γ are equal. In the embodiment shown in the figure, the first reinforcing rib 500 is provided on the rear wall 110 of the fan housing 100, that is, the first sidewall 510 and the second sidewall 520 have the same included angle with the rear wall 110 of the fan housing 100. Therefore, even if the smoke collection box 200 vibrates during the lifting or lowering process or during the operation of the fan 120, in the horizontal direction, the horizontal component F1 and the second component F1 applied by the first sidewall 510 to the first guide rail 311, which are parallel to the rear wall 110 of the fan housing 100, will be balanced. The horizontal component F2 exerted by the side wall 520 on the second guide rail 312, parallel to the rear wall 110 of the fan housing 100, can largely cancel each other out. Furthermore, the swaying of the first sliding connector 321 relative to the first guide rail 311 and the swaying of the second sliding connector 322 relative to the second guide rail 312 can also largely cancel each other out, thereby further ensuring that the lifting and lowering of the smoke collection box 200 is more stable. Moreover, the fan 120 will not cause significant shaking of the smoke collection box 200 during operation.

[0044] For example, such as Figure 8As shown, the second reinforcing rib 600 may include a third sidewall 610 and a fourth sidewall 620. The third sidewall 610 may be parallel to the first sidewall 510. The fourth sidewall 620 may be parallel to the second sidewall 520. A first sliding connector 321 may be disposed on the third sidewall 610. A second sliding connector 322 may be disposed on the fourth sidewall 620. A V-shaped slit is formed between the third sidewall 610 and the fourth sidewall 620 and the first sidewall 510 and the second sidewall 520. It should be noted that the V-shaped slit refers to a slit that is at least generally V-shaped, and is not limited to a perfectly standard V-shape. Of course, a perfectly standard V-shaped slit is also an embodiment protected by this application. In some optional embodiments, the distance L1 between the first sidewall 510 and the third sidewall 610 can be equal to the distance L2 between the second sidewall 520 and the fourth sidewall 620. This allows the V-shaped slits to have the same gap, facilitating the selection of guide rails 310 and matching sliding connectors 320 of the same specification, thus optimizing the selection of the lifting guide rail 300. The same specification of components also facilitates warehouse management, avoiding confusion among operators during installation and reducing assembly errors; thus optimizing the production assembly process. The lifting guide rail 300 can be located within the V-shaped slit. With this configuration, the first sidewall 510 and the second sidewall 520 can form a V-shaped structure, further improving the strength of the sidewalls containing the first sidewall 510 and the second sidewall 520 on the fan housing 100. The third sidewall 610 and the fourth sidewall 620 can also form a V-shaped structure, further improving the strength of the sidewalls containing the first sidewall 510 and the second sidewall 520 on the smoke collection housing 200. The overall strength of the side walls of the smoke collection box 200 and the fan box 100 is improved, thereby eliminating the phenomenon of the lifting guide rail 300 getting stuck due to insufficient strength. The third side wall 610 and the fourth side wall 620, together with the first side wall 510 and the second side wall 520, can also act as a protective cover. The lifting guide rail 300 is located in the V-shaped slit, which prevents external dust or other pollutants from falling into the lifting guide rail 300, further protecting the lifting guide rail 300.

[0045] For example, such as Figure 8 As shown, the second reinforcing rib 600 may include a fifth sidewall 630. The fifth sidewall 630 connects between the third sidewall 610 and the fourth sidewall 620. The fifth sidewall 630 is parallel to the sidewall of the smoke collection box 200 where the second reinforcing rib 600 is located. By connecting the third sidewall 610 and the fourth sidewall 620 with the fifth sidewall 630, more bends are made on the second reinforcing rib 600, thus further increasing the strength of the second reinforcing rib 600. Moreover, the fifth sidewall 630 typically extends into the interior of the smoke collection box 200, such as... Figure 7As shown, compared to the direct connection between the third sidewall 610 and the fourth sidewall 620, connecting the third sidewall 610 and the fourth sidewall 620 via the fifth sidewall 630 avoids the formation of sharp corners inside the smoke collection box 200, thus preventing interference with airflow within the smoke collection box 200. Furthermore, the fifth sidewall 630 is parallel to the sidewall containing the second reinforcing rib 600 of the smoke collection box 200. The fifth sidewall 630 can be considered as part of the sidewall directly opposite the sidewall containing the second reinforcing rib 600, serving as a load-bearing surface and facilitating the installation of necessary components on the fifth sidewall 630.

[0046] For example, such as Figure 5 and Figure 7 As shown, a support 700 can be installed inside the smoke collection box 200. The support 700 can have various structures, such as L-shaped, straight, etc., which are not limited here. The second reinforcing rib 600 is connected to the side wall of the smoke collection box 200 where the second reinforcing rib 600 is not located via the support 700. The specific connection method can be a known connection method in the prior art, such as pasting, welding, threaded connection, or various connection methods that may appear in the future, which are not limited here. In some optional embodiments, such as Figure 5 As shown, the second reinforcing rib 600 can be disposed on one side wall of the smoke collection box 200. One end of the bracket 700 is connected to the second reinforcing rib 600, and the other end is connected to the other side wall of the smoke collection box 200. With this arrangement, the second reinforcing rib 600 is not only connected to one side wall of the smoke collection box 200, but also connected to the side wall of the smoke collection box 200 where the second reinforcing rib 600 is not located via the bracket 700. In other words, the second reinforcing rib 600 can be connected to the smoke collection box 200 in two locations. The bracket 700 further enhances the strength and stability of the second reinforcing rib 600.

[0047] For example, such as Figure 5 and Figure 7 As shown, the fifth sidewall 630 of the second reinforcing rib 600 can be connected via a bracket 700 to the sidewall of the smoke collection box 200 where the second reinforcing rib 600 is not located. In some alternative embodiments, such as Figure 5As shown, the second reinforcing rib 600 can be disposed on the rear wall 210 of the smoke collection box 200, and the fifth side wall 630 is connected to the front wall 220 of the smoke collection box 200 via a bracket 700. In some embodiments not shown, the second reinforcing rib 600 can be disposed on the rear wall 210 of the smoke collection box 200, and the fifth side wall 630 is connected to the left side wall of the smoke collection box 200 via a bracket 700. Regardless of the embodiment, the fifth side wall 630 can be connected to the side wall of the smoke collection box 200 where the second reinforcing rib 600 is not located via a bracket 700. With this arrangement, the fifth side wall 630 and the bracket 700 further enhance the strength of the second reinforcing rib 600, thereby increasing the stability of the lifting guide rail 300 during lifting.

[0048] For example, the second reinforcing rib 600 can be disposed on the rear wall 210 of the smoke collection box 200. Because the rear wall 210 of the smoke collection box 200 is usually in a concealed location, users will not easily touch it. Thus, even if the second reinforcing rib 600 is disposed on the rear wall 210, making its shape irregular, the irregular shape or sharp edges will not cause injury to the user, protecting their operational safety. Simultaneously, the second reinforcing rib 600 allows for greater design flexibility, without needing to consider aesthetic factors. Furthermore, users will not be able to directly observe the rear wall 210 of the smoke collection box 200 in real time, improving the user experience. The bracket 700 may include a bracket rear wall 710, a first bracket side wall 720, a second bracket side wall 730, a first bracket front wall 740, and a second bracket front wall 750. The bracket rear wall 710 can be connected to the second reinforcing rib 600. The first support sidewall 720 and the second support sidewall 730 can extend forward from both sides of the support rear wall 710. The first support sidewall 720, the second support sidewall 730, and the support rear wall 710 can be connected to form a U-shape. The first support front wall 740 and the second support front wall 750 can extend from the front side of the first support sidewall 720 and the second support sidewall 730 respectively. The first support front wall 740 and the second support front wall 750 can be connected to the front wall 220 of the smoke collection box 200. Typically, the lifting smoke machine 10 has a shorter front-to-back dimension and a longer left-to-right dimension. Therefore, the stability of the lifting smoke machine 10 in the front-to-back direction during lifting is weaker than its stability in the left-to-right direction. The lifting range hood 10 of this application features a U-shaped support 700. The first and second front walls 740 and 750 of the support 700 are connected to the front wall 220 of the smoke collection box 200, and the rear wall 710 of the support 700 is connected to a second reinforcing rib 600. This effectively shortens the lateral length of the lifting range hood 10, thereby improving its stability. Furthermore, the second reinforcing rib 600 can be positioned on the rear wall 210 of the smoke collection box 200, protecting user safety. The second reinforcing rib 600 also allows for more flexible design options. Additionally, the user will not be able to directly observe the rear wall 210 of the smoke collection box 200 in real time, improving the user experience.

[0049] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0050] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0051] 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, parts, components, and / or combinations thereof.

[0052] It should be noted that the terms "first," "second," etc., used 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 data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0053] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting smoke machine, characterized in that, The device includes a fan housing, a smoke collection housing, a lifting guide rail, and a drive assembly. The smoke collection housing is connected to the fan housing via the lifting guide rail. The smoke collection housing has a smoke collection port. Driven by the drive assembly, the smoke collection housing can rise and fall between a raised position where the smoke collection port is hidden and a lowered position where the smoke collection port is exposed. The side walls of the fan housing and the smoke collection housing are provided with a first reinforcing rib formed by bending, and a second reinforcing rib formed by bending. The lifting guide rail includes a guide rail disposed on the first reinforcing rib and a sliding connector disposed on the second reinforcing rib. The sliding connector is slidably connected to the guide rail. The first reinforcing rib includes a first sidewall and a second sidewall facing the smoke collection box, and there is an included angle between the first sidewall and the second sidewall. The guide rail includes a first guide rail disposed on the first sidewall and a second guide rail disposed on the second sidewall. The sliding connector includes a first sliding connector slidably connected to the first guide rail and a second sliding connector slidably connected to the second guide rail.

2. The lifting smoke machine as described in claim 1, characterized in that, The angles between the first sidewall and the second sidewall and the sidewall containing the first reinforcing rib of the fan housing are equal.

3. The lifting smoke machine as described in claim 1, characterized in that, The angle between the first sidewall and the second sidewall is a right angle or an obtuse angle.

4. The lifting smoke machine as described in claim 1, characterized in that, The second reinforcing rib includes a third sidewall parallel to the first sidewall and a fourth sidewall parallel to the second sidewall. The first sliding connector and the second sliding connector are respectively disposed on the third sidewall and the fourth sidewall. The third sidewall and the fourth sidewall form a V-shaped slit with the first sidewall and the second sidewall. The lifting guide rail is located within the V-shaped slit.

5. The lifting smoke machine as described in claim 4, characterized in that, The second reinforcing rib includes a fifth sidewall, which is connected between the third and fourth sidewalls and is parallel to the sidewall where the second reinforcing rib of the smoke collection box is located.

6. The lifting smoke machine as described in claim 5, characterized in that, The smoke collection box is equipped with a support, and the fifth side wall is connected to the side wall of the smoke collection box where the second reinforcing rib is not located through the support.

7. The lifting smoke machine as described in claim 1, characterized in that, The smoke collection box is equipped with a support frame, and the second reinforcing rib is connected to the side wall of the smoke collection box where the second reinforcing rib is not located through the support frame.

8. The lifting smoke machine as described in claim 6 or 7, characterized in that, The second reinforcing rib is disposed on the rear wall of the smoke collection box, and the bracket includes: The rear wall of the bracket is connected to the second reinforcing rib; A first support sidewall and a second support sidewall extending forward from both sides of the rear wall of the support, the first support sidewall, the second support sidewall, and the rear wall of the support connecting to form a U-shape; and A first support front wall and a second support front wall extend from the front side of the first support side wall and the second support side wall, respectively, and are connected to the front wall of the smoke collection box.

9. The lifting smoke machine as described in claim 1, characterized in that, The side wall of the fan housing is bent toward the smoke collection box to form the first reinforcing rib, and the side wall of the smoke collection box is bent toward the interior of the smoke collection box to form the second reinforcing rib.

10. The lifting smoke machine as described in claim 1, characterized in that, The lifting guide rails are multiple and spaced apart in the horizontal direction, and the drive assembly is disposed between the multiple lifting guide rails.

11. The lifting smoke machine as described in claim 1, characterized in that, The lifting guide rail is located on the outside of the smoke collection box.

Images