Range hood

Abstract

The utility model discloses a range hood which comprises a fan box, a pipeline and an exhaust fume collecting hood, at least part of the fan box is arranged above a suspended ceiling, and an air inlet of the fan box is connected with an air outlet of the exhaust fume collecting hood through the pipeline; the fan box, the pipeline and the exhaust fume collecting hood are sequentially arranged close to a wall body from top to bottom, or at least part of the pipeline and the exhaust fume collecting hood are sequentially arranged close to the wall body from top to bottom, and a preset interval is formed between the fan box and the wall body; the pipeline comprises a flexible pipeline body and a rigid pipeline body which are connected in a sealed mode, the rigid pipeline body is a rigid plastic smoke pipe and / or a metal smoke pipe, the flexible pipeline body comprises at least one first connecting part, the rigid pipeline body comprises at least one second connecting part, and the first connecting parts are used for being connected with the second connecting parts in a sealed mode. According to the range hood, the mounting adaptability of the range hood can be improved while it is guaranteed that the range hood has an excellent noise reduction effect, the mounting time and cost are saved, and the using reliability of the range hood is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a range hood. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. The main function of a range hood is to remove fumes during cooking, thereby maintaining a good kitchen environment.

[0003] Common integrated range hoods have the following main drawbacks: The fan inevitably generates a lot of noise when driving the smoke, resulting in a poor user experience during cooking. To overcome this problem, a split range hood has been proposed in the related art, achieving a certain degree of noise reduction.

[0004] However, when the split-type range hood is used in some special installation scenarios, for example, there is a complex piping structure inside the ceiling, or the roof is provided with special beams, or the ceiling is a gypsum ceiling, which will affect the appearance and strength after cutting. When the existing range hood is installed, its own piping structure is likely to interfere with the above-mentioned piping structure, beams, ceiling, etc., which will result in the range hood being unable to be installed before the above-mentioned interference structure is removed, or if the above-mentioned interference structure is not resolved, the installation difficulty and cost will be very high.

[0005] Therefore, it is necessary to provide a range hood that solves at least one of the above problems. Utility Model Content

[0006] In response to the defects of the existing technology, an embodiment of the present invention provides a range hood that can improve the adaptability of the range hood installation while ensuring that the range hood has excellent noise reduction effect, saving installation time and cost, and ensuring the reliability of the range hood during use.

[0007] The specific technical solution of the embodiment of the utility model is:

[0008] A range hood, comprising: a fan box, a pipeline and a smoke hood, wherein the fan box is at least partially arranged above the ceiling, and the air inlet of the fan box is connected to the air outlet of the smoke hood through the pipeline; the fan box, the pipeline and the smoke hood are arranged against the wall in sequence from top to bottom, or, at least part of the pipeline and the smoke hood are arranged against the wall in sequence from top to bottom and the fan box and the wall have a preset interval; the pipeline comprises a flexible pipeline and a rigid pipeline that are sealed together, the rigid pipeline is a rigid plastic smoke duct and / or a metal smoke duct, the flexible pipeline comprises at least one first connecting part, and the rigid pipeline comprises at least one second connecting part, the first connecting part is used to be sealed and connected to the second connecting part.

[0009] In a preferred embodiment, the first connecting portion and the second connecting portion are in a non-detachable fixed sealing connection or a detachable sealing connection.

[0010] In a preferred embodiment, the flexible pipeline and the rigid pipeline are integrally formed, and the first connecting portion and the second connecting portion are integrally formed.

[0011] In a preferred embodiment, the first connecting part is inserted into the second connecting part, and the outer surface of the first connecting part and the inner surface of the second connecting part are non-detachably fixed and sealedly connected or detachably sealedly connected, or the second connecting part is inserted into the first connecting part, and the inner surface of the first connecting part and the outer surface of the second connecting part are non-detachably fixed and sealedly connected or detachably sealedly connected.

[0012] In a preferred embodiment, the cross-sections of the first connecting portion and the second connecting portion are quadrilateral or quasi-quadrilateral, and the first connecting portion and the second connecting portion are connected by a quick-connect sealing mechanism at the rear side, left side, or right side close to the wall.

[0013] In a preferred embodiment, the cross-sections of the first connection portion and the second connection portion are circular or quasi-circular, and the first connection portion is configured to be detachably sealed and screwed to the second connection portion.

[0014] In a preferred embodiment, the width of the rigid pipe and / or the flexible pipe along the front-to-back direction is between 10 cm and 30 cm.

[0015] In a preferred embodiment, the rigid pipeline and / or the flexible pipeline is arranged close to the wall, or the distance between the rear side of the rigid pipeline and / or the flexible pipeline close to the wall and the wall does not exceed 15 cm.

[0016] In a preferred embodiment, the rigid tube is switchable between at least a first shape and a second shape.

[0017] In a preferred embodiment, the rigid pipe includes: a first rigid pipe section and a second rigid pipe section that are sealed and connected. When the rigid pipe is in the first shape, the first rigid pipe section is horizontally arranged or inclined relative to the vertical direction and is connected to the air inlet of the fan box, and the second rigid pipe section is vertically arranged and connected to the air outlet of the smoke hood.

[0018] In a preferred embodiment, the first rigid pipe section is located above the suspended ceiling.

[0019] In a preferred embodiment, the rigid pipe includes: a first rigid pipe section and a second rigid pipe section that are sealed and connected. When the rigid pipe is in the second shape, the first rigid pipe section and the second rigid pipe section are both vertically arranged, the first rigid pipe section is connected to the air inlet of the fan box, and the second rigid pipe section is connected to the air outlet of the smoke hood.

[0020] In a preferred embodiment, at least part of the second rigid pipe section is located below the suspended ceiling.

[0021] In a preferred embodiment, the rigid pipeline includes: a first rigid pipe segment and a second rigid pipe segment, wherein a deformable connection portion is provided between the first rigid pipe segment and the second rigid pipe segment, and the first rigid pipe segment and the second rigid pipe segment are sealed and connected via the deformable connection portion.

[0022] In a preferred embodiment, the deformable connecting portion includes: a universal joint and / or a flexible portion.

[0023] In a preferred embodiment, the rigid pipeline includes a first rigid pipe section and a second rigid pipe section that can be spliced, assembled and sealed.

[0024] In a preferred embodiment, a noise reduction structure is provided in the rigid pipeline.

[0025] In a preferred embodiment, the noise reduction structure includes sound-absorbing cotton and / or sound-isolating cotton and / or sound-absorbing wedges.

[0026] In a preferred embodiment, the sound-absorbing cotton and / or the sound-insulating cotton are attached to the inner surface of the rigid pipeline, and the rigid pipeline also includes a fixed bracket, which is connected to the inner surface of the rigid pipeline and is used to limit the sound-absorbing cotton and / or the sound-insulating cotton.

[0027] In a preferred embodiment, the fixing bracket includes a pressing plate arranged around the sound-absorbing cotton and / or the sound-insulating cotton, and a microporous structure is provided on the pressing plate.

[0028] In a preferred embodiment, the cross-section of the pipeline is a quadrilateral or a quasi-quadrilateral, one end of the pipeline is connected to the air outlet of the smoke hood on the rear side, left side or right side of the wall through a quick-connect sealing mechanism, and / or the other end of the pipeline is connected to the air inlet of the fan box on the rear side, left side or right side of the wall through a quick-connect sealing mechanism.

[0029] In a preferred embodiment, the cross section of the pipeline is circular or quasi-circular, one end of the pipeline is sealed and screwed to the air outlet of the smoke hood, and / or the other end of the pipeline is sealed and screwed to the air inlet of the fan box.

[0030] In a preferred embodiment, the rigid pipeline is located below the flexible pipeline, the lower end of the rigid pipeline is sealedly connected to the air outlet of the smoke hood, the upper end of the rigid pipeline is sealedly connected to one end of the flexible pipeline, and the other end of the flexible pipeline is sealedly connected to the air inlet of the fan box.

[0031] In a preferred embodiment, the flexible pipeline is located below the rigid pipeline, the lower end of the flexible pipeline is sealedly connected to the air outlet of the smoke hood, the upper end of the flexible pipeline is sealedly connected to one end of the rigid pipeline, and the other end of the rigid pipeline is sealedly connected to the air inlet of the fan box.

[0032] In a preferred embodiment, the flexible pipe includes a first flexible pipe segment and a second flexible pipe segment, and the first flexible pipe segment, the rigid pipe, and the second flexible pipe segment are arranged in sequence from top to bottom, one end of the first flexible pipe segment is sealed connected to the air inlet of the fan box, the other end of the first flexible pipe segment is sealed connected to one end of the rigid pipe, the other end of the rigid pipe is sealed connected to the upper end of the second flexible pipe segment, and the lower end of the second flexible pipe segment is sealed connected to the air outlet of the smoke hood.

[0033] In a preferred embodiment, the rigid pipe includes a first rigid pipe section and a second rigid pipe section, and the first rigid pipe section, the flexible pipe, and the second rigid pipe section are arranged in sequence from top to bottom, one end of the first rigid pipe section is sealed connected to the air inlet of the fan box, the other end of the first rigid pipe section is sealed connected to one end of the flexible pipe, the other end of the flexible pipe is sealed connected to the upper end of the second rigid pipe section, and the lower end of the second rigid pipe section is sealed connected to the air outlet of the smoke hood.

[0034] In a preferred embodiment, the quick-connect sealing mechanism includes: a sealing member and a plug-in mechanism and / or a clamping mechanism installed in cooperation with the sealing member.

[0035] In a preferred embodiment, the plug-in mechanism includes a first docking portion and a second docking portion, wherein the first docking portion is provided with a groove for mounting the sealing member, and when the second docking portion is inserted into the first docking portion, it can press against the sealing member.

[0036] In a preferred embodiment, the fan box includes a shell and a fan, and the fan is arranged in the shell and fixed on the shell; the air inlet of the shell is arranged on the side of the shell, and the axis of the fan is arranged in the vertical direction; or, the air inlet of the shell is arranged downward, and the axis of the fan is arranged in the horizontal direction or in the vertical direction.

[0037] In a preferred embodiment, the range hood further comprises a sound-absorbing cover and / or a sound-isolating cover, and the sound-absorbing cover and / or the sound-isolating cover covers at least a portion of the housing.

[0038] In a preferred embodiment, the sound-absorbing cover and / or the sound-insulating cover are connected to the housing, and / or the sound-absorbing cover and / or the sound-insulating cover can be connected to a wall.

[0039] The technical solution of the utility model has the following significant beneficial effects:

[0040] In some embodiments, by providing a rigid and flexible pipeline within the range hood's piping, the rigid pipeline can ensure that the overall pipeline has relatively stable structural strength. Furthermore, when functional components such as noise reduction structures are provided within the rigid pipeline, these functional components can be conveniently and reliably installed and secured, while also ensuring the reliability and stability of these functional components during use. Furthermore, the flexible and rigid pipelines are sealed together via a first connecting portion and a second connecting portion, ensuring the sealing and reliability of the connection between the flexible and rigid pipelines, thereby preventing smoke collected from the fume hood from escaping from the connection between the two as it flows through the pipeline to the fan housing.

[0041] In some embodiments, even if there is an interference structure at the top of the wall-facing position, and the range hood is restricted by the interference structure in the front-to-back direction and / or restricted by interference structures such as cabinets in the left-to-right direction and / or restricted by the installation position of the smoke hood, the flexible pipe can be used to make the pipe itself have the ability to deform, so that it can flexibly avoid the interference structure, improve the adaptability of the range hood installation, save installation time and cost, and thus realize the installation of the range hood against the wall in an effective space position.

[0042] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many variations, modifications, and equivalents. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportional dimensions of the components in the drawings are for illustrative purposes only and are intended to facilitate understanding of the present invention. They are not intended to limit the shapes and proportional dimensions of the components of the present invention. Those skilled in the art, guided by the present invention, may select various possible shapes and proportional dimensions to implement the present invention, depending on the specific circumstances.

[0044] Figure 1 This is a schematic diagram of the structure of a range hood fan box, pipes and smoke hood arranged against the wall from top to bottom in sequence according to the embodiment of the present application. Figure 1 ;

[0045] Figure 2 This is a schematic diagram of the structure of a range hood fan box, pipes and smoke hood arranged against the wall from top to bottom in sequence according to the embodiment of the present application. Figure 2 ;

[0046] Figure 3 This is a schematic diagram of the structure of a range hood fan box, pipes and smoke hood arranged against the wall from top to bottom in sequence according to the embodiment of the present application. Figure 3 ;

[0047] Figure 4 This is a schematic diagram of a range hood provided in an embodiment of the present application, in which at least part of the pipes and the smoke hood are arranged against the wall from top to bottom, and the fan box and the wall have a preset distance. Figure 1 ;

[0048] Figure 5 This is a schematic diagram of a range hood provided in an embodiment of the present application, in which at least part of the pipes and the smoke hood are arranged against the wall from top to bottom, and the fan box and the wall have a preset distance. Figure 2 ;

[0049] Figure 6 This is a schematic diagram of a range hood provided in an embodiment of the present application, in which at least part of the pipes and the smoke hood are arranged against the wall from top to bottom, and the fan box and the wall have a preset distance. Figure 3 ;

[0050] Figure 7 This is a structural diagram of the coordination position of a fan box and a pipeline of a range hood provided in an embodiment of the present application;

[0051] Figure 8 for Figure 7 Cross-sectional view at AA in the middle;

[0052] Figure 9 This is a schematic diagram of the state of a fan box and pipeline of a range hood provided in an embodiment of the present application during the assembly process;

[0053] Figure 10 for Figure 9 A partial enlarged view of point B in the middle;

[0054] Figure 11 This is a schematic diagram of a range hood fan box and pipelines after being assembled in place, provided in an embodiment of the present application;

[0055] Figure 12 This is a schematic diagram of the installation of a noise reduction structure in a rigid pipeline of a range hood provided in an embodiment of the present application;

[0056] Figure 13 This is a schematic diagram of the installation of another noise reduction structure in the rigid pipeline of the range hood provided in the embodiment of the present application.

[0057] Reference numerals of this application:

[0058] 1. Fan box;

[0059] 11. Housing; 12. Air inlet;

[0060] 21. Flexible pipe; 210. First connecting portion;

[0061] 211. First flexible pipe section;

[0062] 212, second flexible pipe section;

[0063] 22. Rigid pipeline; 220. Second connecting portion;

[0064] 221, first rigid pipe section;

[0065] 222, second rigid pipe section;

[0066] 23. Noise reduction structure;

[0067] 24. Seals;

[0068] 25. Press plate;

[0069] 261, first docking portion; 2610, raised portion; 2611, groove;

[0070] 262, second docking portion; 2620, overlapping portion;

[0071] 3. Fume hood;

[0072] 4. Suspended ceiling;

[0073] 5. Install the wall;

[0074] 6. Deformable connection part;

[0075] X, front-back direction;

[0076] Y, height direction;

[0077] Z, left and right direction. DETAILED DESCRIPTION

[0078] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0079] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0081] The utility model provides a range hood, which can improve the adaptability of the range hood installation while ensuring that the range hood has an excellent noise reduction effect, save installation time and cost, and ensure the reliability of the range hood when in use.

[0082] Please refer to the comprehensive Figures 1 to 13 , a range hood is provided in an embodiment of the present application specification, which may include: a fan box 1, a pipeline and a smoke collection hood 3, the fan box 1 being at least partially arranged above the suspended ceiling 4, the air inlet 12 of the fan box 1 being connected to the air outlet of the smoke collection hood 3 through the pipeline; the fan box 1, the pipeline and the smoke collection hood 3 are arranged against the wall in sequence from top to bottom, or at least part of the pipeline and the smoke collection hood 3 are arranged against the wall in sequence from top to bottom and the fan box 1 has a preset interval with the wall; the pipeline includes a flexible pipeline 21 and a rigid pipeline 22 that are sealed and connected, the rigid pipeline 22 is a rigid plastic smoke pipe and / or a metal smoke pipe, the flexible pipeline 21 includes at least one first connecting portion 210, the rigid pipeline 22 includes at least one second connecting portion 220, the first connecting portion 210 is used to be sealed and connected to the second connecting portion 220.

[0083] In this embodiment of the present application, the range hood may include: a fan housing 1, piping, and a fume hood 3. The fume hood 3, piping, and fan housing 1 may be arranged sequentially along the flow direction of the fume. The fume hood 3 is positioned relatively close to the user's cooking area, while the fan housing 1 is positioned relatively far from the user's cooking area.

[0084] Typically, in a typical kitchen environment, a suspended ceiling 4 is installed above the kitchen space. The range hoods described in the embodiments of this application are primarily illustrated for use in a kitchen environment with a suspended ceiling 4. Of course, the range hoods provided in the embodiments of this application can also be used in environments without a suspended ceiling 4. When the range hoods provided in the embodiments of this application are used in environments without a suspended ceiling 4, the suspended ceiling 4 mentioned in the embodiments of this application can simply be removed.

[0085] In an embodiment of the present application, part or all of the fan housing 1 can be located above the suspended ceiling 4. The fan housing 1 has an air inlet 12 and an air outlet relative to each other. The air inlet 12 of the fan housing 1 can be connected to the air outlet of the fume hood 3 via a pipeline, and the air outlet of the fan housing 1 can be connected to the fume hood 3 via a pipeline. Specifically, the fan housing 1 can include a housing 11 and a fan, which is disposed within and fixed to the housing 11. For a range hood, the fan in the fan housing 1 is the primary source of noise. When part or all of the fan housing 1 is located above the suspended ceiling 4, the fan housing 1 is positioned away from the user, which helps reduce the impact of the fan's operating noise on the user. Furthermore, when the fan is positioned away from the user, it is also relatively far from the stove where the fume is generated. This effectively reduces the amount of fume adsorbed on the fan's impeller and volute. Specifically, grease is less likely to accumulate on the fan, thereby ensuring the fan's reliability during operation and extending its service life.

[0086] The pipeline is located between the fan box 1 and the smoke hood 3, and is used to connect the air inlet 12 of the fan box 1 and the air outlet of the smoke hood 3. The pipeline can include a flexible pipeline 21 and a rigid pipeline 22 that are sealed and connected.

[0087] Among them, the rigid pipe 22 can be made of a rigid material, the material of the rigid pipe 22 is not easy to deform, and the structure of the rigid pipe 22 itself is not easy to deform after it is installed in place. Specifically, the material of the rigid pipe 22 can be any one of rigid plastic, metal, etc. or a combination thereof. Of course, the material of the rigid pipe 22 is not limited to the above examples. Technicians in the relevant field may make other changes based on the technical essence of this application, but as long as the functions and effects achieved are the same or similar to those of this application, they should be covered within the scope of protection of this application.

[0088] The flexible conduit 21 can be made of a flexible material and / or a deformable structure. The flexible conduit 21 can be a rubber tube, a plastic hose, or the like, and the specific form of the flexible conduit 21 is not specifically limited herein. Furthermore, when the flexible conduit 21 is made of a deformable structure, its specific form can be a universal joint, a bellows, or the like, and the specific form of the flexible conduit 21 is also not specifically limited herein.

[0089] In this embodiment, by providing a rigid pipeline 22 and a flexible pipeline 21 in the pipeline, the rigid pipeline 22 can be used to ensure that the pipeline as a whole has a relatively stable structural strength; further, when functional components such as a noise reduction structure 23 are provided in the rigid pipeline 22, it can be ensured that these functional components are conveniently and reliably installed and fixed, and the reliability and stability of these functional components during use can also be ensured.

[0090] For the range hood, there are certain installation requirements when it is installed. Basically, most users tend to set it against the wall. Among them, the above-mentioned setting against the wall mainly refers to the range hood being installed close to the wall. Some or all of the components of the range hood can be in contact with the wall, or there is a small distance between the wall (wherein this distance can be slightly different according to the different scenarios of actual application, and this application does not make specific numerical restrictions here). When the range hood is set against the wall, it can make full use of the wall, the cabinets installed on the wall, etc. for positioning installation and noise reduction, which is also conducive to making the layout of the range hood reasonable and beautiful, and can avoid being interfered with by obstacles located in front of the wall and being unable to be installed. In addition, the flexible pipe 21 and the rigid pipe 22 are sealed by the first connecting portion 210 and the second connecting portion 220, which can ensure the sealing and reliability of the flexible pipe 21 and the rigid pipe 22 at the connection position, and prevent the smoke collected from the smoke hood 3 from escaping from the connection position of the two during the process of flowing through the pipe to the fan box 1.

[0091] In some embodiments, even if there is an interference structure at the top of the wall-facing position, and the range hood is restricted by the interference structure in the front-to-back direction and / or restricted by interference structures such as cabinets in the left-to-right direction and / or restricted by the installation position of the smoke hood, the flexible pipe 21 can be used to make the pipe itself deformable, so that it can flexibly avoid the interference structure, improve the adaptability of the range hood installation, save installation time and cost, and thus realize the installation of the range hood against the wall in an effective space position.

[0092] For the fan box 1, its housing 11 can be a rectangular parallelepiped or a quasi-rectangular parallelepiped structure as a whole, which has relative length, width and height dimensions. Among them, the height dimension is generally the smallest, between 15 cm and 30 cm.

[0093] Of course, the embodiments of the present application do not exclude the possibility that the shell 11 has other regular or irregular shapes and structures. In the embodiments of the present application, the shell 11 is mainly illustrated as a rectangular parallelepiped structure. When the shell 11 has other shapes and structures, the present application can be referred to by analogy.

[0094] In some scenarios, such as Figure 1 、 Figure 2 and Figure 3 As shown, the fan box 1, the pipes, and the fume hood 3 are arranged against the wall from top to bottom. If there are some interfering structures in the left-right direction Z with the range hood mounting wall 5, causing interference with the fan box 1 at the top during installation, the length of the fan box 1 can be arranged parallel to the mounting wall 5 to avoid such interference. In this scenario, the fan box 1, pipes, and fume hood 3 can all be placed against the wall.

[0095] Or, in other installation scenarios, such as Figure 4 、 Figure 5 and Figure 6 As shown, at least part of the pipeline and the fume hood 3 are arranged against the wall in sequence from top to bottom, and the fan box 1 has a preset interval with the wall. If the interference structure is far away from the installation wall 5 of the range hood in the front-to-back direction X and the left-to-right direction Z, and the fan box 1 at the top is not prone to interference problems during installation, the length of the fan box 1 can be set perpendicular to the installation wall 5, so that the length of the pipeline can be appropriately extended and have a bending structure, which is conducive to reducing the impact of the noise generated by the fan when it is working on the user. For the above scenario, at least part of the pipeline and the fume hood 3 can be set against the wall.

[0096] Regarding the above-mentioned requirement of setting the range hood against the wall, there is a high possibility that there will be some interfering structures above the wall side. At the same time, since the range hood needs to be hidden in the cabinet in the left and right directions Z, the adjustment range is limited, which directly affects the smooth installation of the range hood.

[0097] In this embodiment, even if there is an interference structure at the top of the wall-facing position, and the front-to-back direction X is restricted by the interference structure and / or the left-to-right direction Z is restricted by interference structures such as cabinets, the flexible pipe 21 can be used to make the pipe itself have the ability to deform, so that it can flexibly avoid the interference structure, improve the adaptability of the range hood installation, save installation time and cost, and thus realize the installation of the range hood against the wall in an effective space position.

[0098] A sealed connection mechanism can be formed between the rigid pipe 22 and the flexible pipe 21. Specifically, the flexible pipe 21 may include at least one first connection portion 210, and the rigid pipe 22 may include at least one second connection portion 220. The first connection portion 210 and the second connection portion 220 cooperate with each other to form the above-mentioned sealed connection mechanism, or a sealing unit is further provided between the first connection portion 210 and the second connection portion 220. The first connection portion 210 and the second connection portion 220 cooperate to form a sealed connection mechanism. The flexible pipe 21 and the rigid pipe 22 are sealedly connected by the first connection portion 210 and the second connection portion 220, which can ensure the sealing and reliability of the flexible pipe 21 and the rigid pipe 22 at the connection position, and prevent the smoke collected from the smoke hood 3 from escaping from the connection position between the two during the process of flowing through the pipe to the fan box 1.

[0099] In some embodiments, the first connection portion 210 and the second connection portion 220 are in a non-detachable fixed sealed connection or a detachable sealed connection.

[0100] In one embodiment, the first connection portion 210 and the second connection portion 220 can be coupled together in a non-detachable fixed sealed connection. The rigid conduit 22 and the flexible conduit 21 can be welded to achieve a non-detachable sealed connection. Alternatively, the flexible conduit 21 and the rigid conduit 22 can be integrally formed, with the first connection portion 210 and the second connection portion 220 being integrally formed.

[0101] When the flexible pipeline 21 and the rigid pipeline 22 are integrally formed, the connection structure between the flexible pipeline 21 and the rigid pipeline 22 can be reduced, and the connection steps of connecting the flexible pipeline 21 and the rigid pipeline 22 can also be reduced. For example, the specific materials of the rigid pipeline 22 and the flexible pipeline 21 can be the same. The rigid pipeline 22 can be a metal / plastic rigid pipe with a certain length, and the flexible pipeline 21 can be a metal / plastic hose with a certain length. The metal / plastic rigid pipe and the metal / plastic hose are manufactured in an integral molding manner during the manufacturing process. Alternatively, the specific materials of the rigid pipeline 22 and the flexible pipeline 21 can be different. The rigid pipeline 22 can be a rigid plastic pipe, and a deformable flexible pipe can be connected to one end of the rigid plastic pipe by injection molding (the two are injection molded in an integral molding at the connection position), so as to achieve reliable connection and reliable sealing.

[0102] Of course, the manner in which the flexible pipe 21 and the rigid pipe 22 are integrally formed is not limited to the above example, and this application does not set forth the sole limitation. Specifically, the first connecting portion 210 may be a pipe section near the end of the rigid pipe 22, and the second connecting portion 220 may be a pipe section near the end of the flexible pipe 21.

[0103] In another embodiment, when the first connection part 210 and the second connection part 220 are detachably sealed, the first connection part 210 is inserted into the second connection part 220, and the outer surface of the first connection part 210 and the inner surface of the second connection part 220 are non-detachably fixedly sealed or detachably sealed, or the second connection part 220 is inserted into the first connection part 210, and the inner surface of the first connection part 210 and the outer surface of the second connection part 220 are non-detachably fixedly sealed or detachably sealed.

[0104] In this embodiment, along the height direction Y, the relative positions of the sealed flexible pipe 21 and the rigid pipe 22 in the pipe can be: the flexible pipe 21 is on top and the rigid pipe 22 is on the bottom; or, the rigid pipe 22 is on top and the flexible pipe 21 is on the bottom; or, the flexible pipe 21 is between the rigid pipes 22; or, the rigid pipe 22 is between the flexible pipes 21. The aforementioned various methods can be adaptively selected according to different installation conditions in the user's home to improve the adaptability of the installation.

[0105] like Figure 3 or Figure 6 As shown, in one embodiment, the rigid pipeline 22 is located below the flexible pipeline 21, the lower end of the rigid pipeline 22 is sealedly connected to the air outlet of the smoke hood 3, the upper end of the rigid pipeline 22 is sealedly connected to one end of the flexible pipeline 21, and the other end of the flexible pipeline 21 is sealedly connected to the air inlet 12 of the fan box 1.

[0106] In this embodiment, the flexible pipe 21 may include a single pipe section having a predetermined length, and the rigid pipe 22 may include a single pipe section having a predetermined length. The predetermined lengths may vary depending on the installation location and the functional components to be installed, and this application does not impose specific numerical limitations.

[0107] In this embodiment, the flexible pipe 21 can be located above the rigid pipe 22. Along the direction of oil smoke flow, the fume hood 3, the rigid pipe 22, the flexible pipe 21, and the fan box 1 can be arranged in sequence. The connection position of any two of the above components can be connected in a sealed manner to ensure the sealing of the connection position.

[0108] like Figure 2 or Figure 5As shown, in one embodiment, the flexible pipe 21 is located below the rigid pipe 22, the lower end of the flexible pipe 21 is sealedly connected to the air outlet of the smoke hood 3, the upper end of the flexible pipe 21 is sealedly connected to one end of the rigid pipe 22, and the other end of the rigid pipe 22 is sealedly connected to the air inlet 12 of the fan box 1.

[0109] In this embodiment, the flexible pipe 21 may include a single pipe section having a predetermined length, and the rigid pipe 22 may include a single pipe section having a predetermined length. The predetermined lengths may vary depending on the installation location and the functional components to be installed, and this application does not impose specific numerical limitations.

[0110] In this embodiment, the flexible pipe 21 can be located below the rigid pipe 22. Along the direction of oil smoke flow, the fume hood 3, the flexible pipe 21, the rigid pipe 22, and the fan box 1 can be arranged in sequence. The connection position of any two of the above components can be connected in a sealed manner to ensure the sealing of the connection position.

[0111] like Figure 1 As shown, in one embodiment, the flexible pipe 21 includes a first flexible pipe segment 211 and a second flexible pipe segment 212, and the first flexible pipe segment 211, the rigid pipe 22, and the second flexible pipe segment 212 are arranged in sequence from top to bottom, one end of the first flexible pipe segment 211 is sealedly connected to the air inlet 12 of the fan box 1, the other end of the first flexible pipe segment 211 is sealedly connected to one end of the rigid pipe 22, the other end of the rigid pipe 22 is sealedly connected to the upper end of the second flexible pipe segment 212, and the lower end of the second flexible pipe segment 212 is sealedly connected to the air outlet of the smoke hood 3.

[0112] In this embodiment, the flexible conduit 21 may include a first flexible conduit segment 211 and a second flexible conduit segment 212, which are separately provided. The rigid conduit 22 may include a single conduit segment of a predetermined length. The lengths of the first flexible conduit segment 211 and the second flexible conduit segment 212, as well as the predetermined length of the rigid conduit 22, may vary depending on the location where they are installed and the functional components to be installed, and are not limited to specific values ​​in this application.

[0113] The rigid pipe 22 can be located between the first flexible pipe section 211 and the second flexible pipe section 212. Along the direction of oil smoke flow, the fume hood 3, the second flexible pipe section 212, the rigid pipe 22, the first flexible pipe section 211, and the fan housing 1 can be arranged in this order. Any two of these components can be connected in a sealed manner to ensure a tight seal at the connection point.

[0114] like Figure 4 As shown, in one embodiment, the rigid pipe 22 includes a first rigid pipe section 221 and a second rigid pipe section 222, and the first rigid pipe section 221, the flexible pipe 21, and the second rigid pipe section 222 are arranged in sequence from top to bottom, one end of the first rigid pipe section 221 is sealed connected to the air inlet 12 of the fan box 1, the other end of the first rigid pipe section 221 is sealed connected to one end of the flexible pipe 21, the other end of the flexible pipe 21 is sealed connected to the upper end of the second rigid pipe section 222, and the lower end of the second rigid pipe section 222 is sealed connected to the air outlet of the smoke hood 3.

[0115] In this embodiment, the rigid conduit 22 may include a first rigid conduit segment 221 and a second rigid conduit segment 222, each of which is separately provided. The flexible conduit 21 may include a single, integral conduit segment of a predetermined length. The lengths of the first rigid conduit segment 221 and the second rigid conduit segment 222, as well as the predetermined length of the flexible conduit 21, may vary depending on the location where the conduit is installed and the functional components to be installed, and are not limited to specific values ​​herein.

[0116] The flexible pipe 21 can be located between the first rigid pipe section 221 and the second rigid pipe section 222. Along the direction of oil smoke flow, the fume hood 3, the second rigid pipe section 222, the flexible pipe 21, the first rigid pipe section 221, and the fan housing 1 can be arranged in this order. Any two of these components can be connected in a sealed manner to ensure a tight seal at the connection point.

[0117] Taking the flexible pipeline 21 on top and the rigid pipeline 22 on the bottom as an example, the first connection part 210 of the flexible pipeline 21 can be inserted into the second connection part 220 of the rigid pipeline 22, and the outer surface of the first connection part 210 and the inner surface of the second connection part 220 are non-detachably fixedly sealed and connected or detachably sealed and connected. Such an arrangement can ensure that even when the seal of the first connection part 210 and the second connection part 220 fails at the mating position, the smoke in the pipeline is not easy to escape from the mating position, and the oil condensed from the oil smoke on the flexible inner wall will not overflow from the mating position of the two, but will flow downward along the rigid pipeline 22 to flow into the smoke hood 3 and the oil cup.

[0118] Taking the example where the rigid pipeline 22 is on top and the flexible pipeline 21 is on the bottom, the second connection part 220 of the rigid pipeline 22 can be inserted into the first connection part 210 of the flexible pipeline 21, and the inner surface of the first connection part 210 and the outer surface of the second connection part 220 are non-detachable fixed sealed connection or detachable sealed connection. Such an arrangement can also achieve the above-mentioned equivalent technical effects.

[0119] In addition, taking the example in which the rigid pipeline 22 is on the top and the flexible pipeline 21 is on the bottom, in the embodiment of the present application, the form of inserting the first connecting part 210 of the flexible pipeline 21 into the second connecting part 220 of the rigid pipeline 22 is not excluded. When the above form is adopted, as long as the sealing positions of the two are ensured to have better reliability, the escape of oil smoke and the overflow of oil can be avoided.

[0120] In one embodiment, the cross-sections of the first connection portion 210 and the second connection portion 220 are quadrilateral or quasi-quadrilateral, and the first connection portion 210 and the second connection portion 220 are connected by a quick-connect sealing mechanism at the rear side, left side, or right side close to the wall.

[0121] In this embodiment, the cross-section of the flexible pipe 21 can be a quadrilateral or a quasi-quadrilateral, and the cross-sectional size of the flexible pipe 21 can be a fixed amount or a variable amount. The size of the cross-sectional size of the flexible pipe 21 can vary depending on the interface of the component to which it is connected, and this application does not make any specific restrictions here. The first connecting portion 210 can be a section of the flexible pipe 21 near the end. The cross-sectional structure of the first connecting portion 210 can be the same as or similar to the cross-sectional structure of the main body of the flexible pipe 21. In addition, in this embodiment, it is not ruled out that the first connecting portion 210 is a section of cross-sectional structure specially set at the end of the flexible pipe 21, and the cross-sectional structure of the main body of the flexible pipe 21 is different from the cross-sectional structure of the main body of the flexible pipe 21.

[0122] The cross-section of the first connecting portion 210 can be a quadrilateral or a quasi-quasi-quasi-shape. When the cross-section of the first connecting portion 210 is a quadrilateral or a quasi-quasi-quasi-shape, the overall structure of the pipeline is relatively simple, highly versatile, and has low manufacturing costs. Of course, in this embodiment, other cross-sectional configurations of the first connecting portion 210 are also possible.

[0123] In this embodiment, the cross-section of the rigid pipeline 22 can be a quadrilateral or a quasi-quadrilateral, and the cross-sectional size of the rigid pipeline 22 can be a fixed amount or a variable amount. The size of the cross-sectional size of the rigid pipeline 22 can vary depending on the interface of the component to which it is connected, etc., and this application does not make any specific restrictions here. The second connecting portion 220 can be a section of the rigid pipeline 22 near the end. The cross-sectional shape of the second connecting portion 220 can be a quadrilateral or a quasi-quadrilateral. The cross-sectional structure of the second connecting portion 220 can be the same as or similar to the cross-sectional structure of the main body of the rigid pipeline 22. In addition, in this embodiment, it is not ruled out that the second connecting portion 220 is a section of cross-sectional structure specially set at the end of the rigid pipeline 22, and the cross-sectional structure of the main body of the rigid pipeline 22 is different from that of the main body of the rigid pipeline 22.

[0124] When the cross-section of the second connecting portion 220 is a quadrilateral or quasi-quadrilateral, the overall structure of the pipeline is relatively simple, highly versatile, and has low manufacturing costs. Of course, in this embodiment, other cross-sectional configurations of the second connecting portion 220 are also possible. In theory, the configurations of the second connecting portion 220 and the first connecting portion 210 are compatible, thereby achieving an optimal connection and sealing effect.

[0125] On the rear side near the wall, the flexible pipe 21 and the rigid pipe 22 are interfered with by the installation wall 5 during the connection or disassembly operation, which in turn affects the above-mentioned connection or disassembly operation. Therefore, in order to conveniently connect or disassemble the first connection part 210 of the flexible pipe 21 and the second connection part 220 of the rigid pipe 22 on the rear side near the wall, the first connection part 210 and the second connection part 220 can be connected on the rear side near the wall through a quick-connect sealing mechanism.

[0126] On the left or right side near the wall, the flexible pipe 21 and the rigid pipe 22 are subject to interference from cabinets and other objects during connection or disconnection, which in turn affects the connection operation between the pipes. Therefore, in order to facilitate the docking or disconnection of the first connecting portion 210 of the flexible pipe 21 and the second connecting portion 220 of the rigid pipe 22 on the left or right side near the wall, the first connecting portion 210 and the second connecting portion 220 can be connected on the left or right side near the wall via a quick-connect sealing mechanism. By providing the quick-connect sealing mechanism, not only can the first connecting portion 210 and the second connecting portion 220 be quickly connected or disconnected in a limited space, effectively simplifying the operation steps and reducing the difficulty and time of the operation, but it can also ensure the sealing and reliability of the connection position.

[0127] In this embodiment, the quick-connect sealing mechanism can be formed by the cooperation of the first connecting part 210 and the second connecting part 220, or the quick-connect sealing mechanism can also include other components, such as a sealing component and / or a connecting component, which cooperate with the above-mentioned first connecting part 210 and the second connecting part 220 to achieve sealing and connecting functions.

[0128] In one embodiment, the cross-section of the pipeline is a quadrilateral or a quasi-quadrilateral, and one end of the pipeline is connected to the air outlet of the smoke hood 3 on the rear side, left side or right side of the wall through a quick-connect sealing mechanism, and / or, the other end of the pipeline is connected to the air inlet 12 of the fan box 1 on the rear side, left side or right side of the wall through a quick-connect sealing mechanism.

[0129] In this embodiment, the cross-section of the pipeline can be a quadrilateral or a quasi-quadrilateral as a whole, or the cross-section of the pipeline at the position where it is sealed with the air outlet of the smoke hood 3 is a quadrilateral or a quasi-quadrilateral, and the cross-section of the pipeline at the position where it is sealed with the water inlet of the fan box 1 is a quadrilateral or a quasi-quadrilateral. When the pipeline is constructed as described above, the sealing connection method between the pipeline and the air outlet of the smoke hood 3, the sealing connection method between the pipeline and the air inlet 12 of the fan box 1, and the technical effects that can be achieved can refer to the specific description of the sealing connection method between the flexible pipeline 21 and the rigid pipeline 22, and this application will not elaborate on it here.

[0130] The pipeline includes a rigid pipeline 22 and a flexible pipeline 21. The connection forms between the various components in the pipeline are respectively introduced below with different embodiments.

[0131] like Figure 2 As shown, taking the rigid pipeline 22 above the flexible pipeline 21 as an example, the fan box 1, the rigid pipeline 22, the flexible pipeline 21 and the smoke hood 3 are sequentially arranged against the wall from top to bottom.

[0132] The cross-sections of the rigid pipe 22 and the flexible pipe 21 are quadrilateral or quasi-quadrilateral. The air inlet 12 of the fan box 1 and the rigid pipe 22 are connected by a quick-connect sealing mechanism at the rear side and / or left side and / or right side near the wall, and / or the rigid pipe 22 and the flexible pipe 21 are connected by a quick-connect sealing mechanism at the rear side and / or left side and / or right side near the wall, and / or the flexible pipe 21 and the air outlet of the smoke hood 3 are connected by a quick-connect sealing mechanism at the rear side and / or left side and / or right side near the wall.

[0133] like Figure 3 As shown, taking the flexible pipe 21 above the rigid pipe 22 as an example, the fan box 1, the flexible pipe 21, the rigid pipe 22 and the smoke hood 3 are sequentially arranged against the wall from top to bottom.

[0134] The cross-sections of the rigid pipe 22 and the flexible pipe 21 are quadrilateral or quasi-quadrilateral, and the air inlet 12 of the fan box 1 is connected to the flexible pipe 21 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the flexible pipe 21 is connected to the rigid pipe 22 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the rigid pipe 22 is connected to the air outlet of the smoke hood 3 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism.

[0135] like Figure 1As shown, taking the example where the flexible pipe 21 includes a first flexible pipe segment 211 and a second flexible pipe segment 212, and the rigid pipe 22 is located between the first flexible pipe segment 211 and the second flexible pipe segment 212, the fan box 1, the first flexible pipe segment 211, the rigid pipe 22, the second flexible pipe segment 212, and the smoke hood 3 are arranged against the wall in sequence from top to bottom.

[0136] The cross-sections of the rigid pipeline 22, the first flexible pipe section 211 and the second flexible pipe section 212 are quadrilateral or quasi-quadrilateral, and the air inlet 12 of the fan box 1 is connected to the first flexible pipe section 211 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the first flexible pipe section 211 is connected to the rigid pipeline 22 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the rigid pipeline 22 is connected to the second flexible pipe section 212 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the second flexible pipe section 212 is sealedly connected to the air outlet of the smoke hood 3 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism.

[0137] like Figure 4 As shown, taking the example where the rigid pipe 22 includes a first rigid pipe section 221 and a second rigid pipe section 222, and the flexible pipe 21 is located between the first rigid pipe section 221 and the second rigid pipe section 222, the fan box 1, the first rigid pipe section 221, the flexible pipe 21, the second rigid pipe section 222, and the smoke hood 3 are arranged against the wall in sequence from top to bottom.

[0138] The cross-sections of the flexible pipe 21, the first rigid pipe section 221 and the second rigid pipe section 222 are quadrilateral or quasi-quadrilateral, and the air inlet 12 of the fan box 1 is connected to the first rigid pipe section 221 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the first rigid pipe section 221 is connected to the flexible pipe 21 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the flexible pipe 21 is connected to the second rigid pipe section 222 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism, and / or the second rigid pipe section 222 is sealedly connected to the air outlet of the smoke hood 3 at the rear side and / or left side and / or right side close to the wall through a quick-connect sealing mechanism.

[0139] Of course, in the embodiment of the present application, the specific composition, arrangement, etc. of the rigid pipeline 22 and the flexible pipeline 21 in the pipeline can also be other expanded forms, and this application will not elaborate on them one by one here.

[0140] By configuring the cross section of the pipeline to be a quadrilateral or a quasi-quadrilateral, the overall structure of the pipeline is relatively simple, highly versatile, and has a low manufacturing cost. In this embodiment, the cross section of the pipeline is a quadrilateral or a quasi-quadrilateral as a typical example, but other cross sections of the pipeline can also be configured.

[0141] Among them, on the rear side close to the wall, each pipe or pipe section in the pipeline may be interfered with by the installation wall 5 when performing connection operations or when the pipeline and the fan box 1 and the smoke hood 3 are connected or disassembled, thereby affecting the above-mentioned connection or disassembly operations. Therefore, in order to facilitate the docking or disassembly of the various components of the range hood on the rear side close to the wall, the connection position in the pipeline and the rear side of the connection position between the pipeline and the fan box 1 and the smoke hood 3 can be connected through a quick-connect sealing mechanism.

[0142] Similarly, on the left or right side near the wall, when the various pipes or pipe sections in the pipeline are connected or when the pipeline and the fan box 1 and the smoke hood 3 are connected or disassembled, they may be interfered with by cabinets, etc., which will affect the above-mentioned connection or disassembly operation. Therefore, in order to conveniently connect or disassemble the various components of the range hood on the left or right side near the wall, the connection position in the pipeline and the connection position between the pipeline and the fan box 1 and the smoke hood 3 can be connected on the left or right side near the wall through a quick-connect sealing mechanism. By providing the above-mentioned quick-connect sealing mechanism, not only can the various components of the range hood be quickly connected or disassembled between the left or right side near the wall in a limited space, effectively simplifying the operation steps and reducing the difficulty and time of operation; at the same time, the sealing and reliability of the connection position can be guaranteed.

[0143] Alternatively, in another embodiment, the cross-section of the pipeline is circular or quasi-circular, one end of the pipeline is sealed and screwed to the air outlet of the smoke hood 3, and / or the other end of the pipeline is sealed and screwed to the air inlet 12 of the fan box 1.

[0144] In this embodiment, the cross-section of the pipeline can be circular or quasi-circular as a whole, or the cross-section of the pipeline at the position where it is sealed and connected to the air outlet of the smoke hood 3 is circular or quasi-circular, and the cross-section of the pipeline at the position where it is sealed and connected to the air inlet of the fan box 1 is circular or quasi-circular.

[0145] When the cross section of the pipeline is circular or quasi-circular in general, the pipeline structure is relatively simple, has strong versatility, and has low production cost. Of course, in this embodiment, it is not excluded that the cross section of the pipeline is set to other structures.

[0146] The pipeline includes a rigid pipeline 22 and a flexible pipeline 21. The connection forms of the various components in the pipeline are respectively introduced below with different embodiments.

[0147] like Figure 2 As shown, taking the rigid pipeline 22 above the flexible pipeline 21 as an example, the fan box 1, the rigid pipeline 22, the flexible pipeline 21 and the smoke hood 3 are sequentially arranged against the wall from top to bottom.

[0148] The cross-sections of the rigid pipeline 22 and the flexible pipeline 21 are circular or quasi-circular, the air inlet 12 of the fan box 1 and the rigid pipeline 22 are sealed and screwed together, and / or the rigid pipeline 22 and the flexible pipeline 21 are sealed and screwed together, and / or the flexible pipeline 21 and the air outlet of the smoke hood 3 are sealed and screwed together.

[0149] like Figure 3 As shown, taking the flexible pipe 21 above the rigid pipe 22 as an example, the fan box 1, the flexible pipe 21, the rigid pipe 22 and the smoke hood 3 are sequentially arranged against the wall from top to bottom.

[0150] The cross-sections of the rigid pipeline 22 and the flexible pipeline 21 are circular or quasi-circular, the air inlet 12 of the fan box 1 and the flexible pipeline 21 are sealed and screwed together, and / or the flexible pipeline 21 and the rigid pipeline 22 are sealed and screwed together, and / or the rigid pipeline 22 and the air outlet of the smoke hood 3 are sealed and screwed together.

[0151] like Figure 1 As shown, taking the example where the flexible pipe 21 includes a first flexible pipe segment 211 and a second flexible pipe segment 212, and the rigid pipe 22 is located between the first flexible pipe segment 211 and the second flexible pipe segment 212, the fan box 1, the first flexible pipe segment 211, the rigid pipe 22, the second flexible pipe segment 212, and the smoke hood 3 are arranged against the wall in sequence from top to bottom.

[0152] The cross-sections of the rigid pipeline 22, the first flexible pipeline 21 and the second flexible pipeline 21 are circular or quasi-circular, the air inlet 12 of the fan box 1 is sealed and screwed to the first flexible pipeline 21, and / or the first flexible pipeline 21 is sealed and screwed to the rigid pipeline 22, and / or the rigid pipeline 22 is sealed and screwed to the second flexible pipeline 21, and / or the second flexible pipeline 21 is sealed and screwed to the air outlet of the smoke hood 3.

[0153] like Figure 4As shown, taking the example where the rigid pipe 22 includes a first rigid pipe section 221 and a second rigid pipe section 222, and the flexible pipe 21 is located between the first rigid pipe section 221 and the second rigid pipe section 222, the fan box 1, the first rigid pipe section 221, the flexible pipe 21, the second rigid pipe section 222, and the smoke hood 3 are arranged against the wall in sequence from top to bottom.

[0154] The cross-sections of the flexible pipe 21, the first rigid pipe section 221 and the second rigid pipe section 222 are circular or quasi-circular, and the air inlet 12 of the fan box 1 is sealed and screwed to the first rigid pipe section 221, and / or the first rigid pipe section 221 is sealed and screwed to the flexible pipe 21, and / or the flexible pipe 21 is sealed and screwed to the second rigid pipe section 222, and / or the second rigid pipe section 222 is sealed and screwed to the air outlet of the smoke hood 3.

[0155] When the pipe is on the rear side close to the wall, the interior of the pipe or the pipe and the fan box 1 or the smoke hood 3 are interfered with by the mounting wall 5 during connection or removal, which may affect the connection or removal operation between the components. In addition, on the left or right side close to the wall, the various components are interfered with by cabinets, etc. during connection or removal, which may also affect the connection or removal operation. In this embodiment, when the cross-section of the pipe is set to a circular or quasi-circular shape, the interior of the pipe and the pipe and the docking fan box 1 and smoke hood 3 can be sealed by a sealed screw connection.

[0156] In one embodiment, the quick-connect sealing mechanism may include: a sealing member 24 and a plug-in mechanism and / or a snap-in mechanism installed in cooperation with the sealing member 24 .

[0157] In this embodiment, the quick-connect sealing mechanism may include a sealing member 24 and at least one of a plug-in mechanism or a snap-in mechanism. The sealing member 24 can cooperate with the plug-in mechanism or the snap-in mechanism to achieve a sealing function, and the plug-in mechanism or the snap-in mechanism can achieve a connecting function.

[0158] See also Figures 7 to 11 In a specific embodiment, the plug-in mechanism includes a first docking portion 261 and a second docking portion 262. The first docking portion 261 is provided with a groove 2611 for installing the seal 24. When the second docking portion 262 is inserted into the first docking portion 261, it can press against the seal 24.

[0159] In this embodiment and the accompanying drawings, the air inlet 12 of the fan box 1 and one end of the rigid pipe 22 are sealed and connected through the seal 24 and the plug-in mechanism as an example. The quick-connect sealing mechanism at other positions can also refer to the specific description of the above-mentioned connection position, and this application will not elaborate on them one by one here.

[0160] A first docking portion 261 may be formed at the air inlet 12 of the fan box 1. The first docking portion 261 may be integrally formed with the air inlet 12 of the fan box 1. Of course, it is not ruled out that the first docking portion 261 may be connected to the air inlet 12 of the fan box 1 by other sealing and fixing methods.

[0161] The first docking portion 261 may be formed with an annular groove 2611 in the circumferential direction. The specific shape of the groove 2611 may be matched with the cross-sectional shape of the first docking portion 261. For example, when the cross-section of the first docking portion 261 is square, the circumferential shape of the groove 2611 is also square; when the cross-section of the first docking portion 261 is circular, the circumferential shape of the groove 2611 may also be circular. The groove 2611 has a bottom wall and side walls relative to each other, wherein when the first docking portion 261 is above the second docking portion 262, the opening side of the groove 2611 faces downward, that is, is arranged toward the second docking portion 262. A sealing member 24 is provided in the groove 2611. The sealing member 24 may specifically be a sealing ring with a certain elastic deformation capability, and the shape of the sealing ring may be adapted to the shape of the groove 2611.

[0162] Among them, the height dimension of the side wall of the first docking portion 261 on the rear side close to the installation wall 5 can be smaller than the height dimension of the side wall on the front side away from the installation wall 5, so that when the second docking portion 262 is docked with the first docking portion 261, it can more conveniently abut the sealing member 24 close to the installation wall 5 side, thereby achieving sealing close to the installation wall 5 side.

[0163] like Figure 9 and Figure 10 As shown, the first docking portion 261 may be provided with an inwardly facing protrusion 2610 below and to the side of the groove 2611. The second docking portion 262 includes a lap portion 2620 for cooperating with the protrusion 2610. When the second docking portion 262 and the first docking portion 261 are docked near the installation wall 5, the lap portion 2620 may abut against the protrusion 2610, thereby achieving positioning near the installation wall 5.

[0164] After the first docking portion 261 and the second docking portion 262 are close to the installation wall 5 and sealed, Figure 8 and Figure 11As shown, the side away from the installation wall 5 can be fixed by a detachable connection, thereby achieving circumferential sealing and fixation. The fixing method on the side away from the installation wall 5 can be screw connection or other connection methods. Since the side away from the installation wall 5 is usually the front side facing the user and has a larger installation space, the choice of connection method is also relatively flexible, and this application does not specifically limit it.

[0165] To ensure the tightness of the first and second docking portions 261 and 262 at their mating locations and prevent the leakage of smoke and oil, the two can be designed to form a multi-layered mating structure. Furthermore, to prevent oil from spilling, a guide structure with a certain inclination angle can be provided, thereby further ensuring the reliability of the range hood pipe during use.

[0166] Alternatively, in another embodiment, the cross-sections of the first connection portion 210 and the second connection portion 220 are circular or quasi-circular, and the first connection portion 210 is configured to be detachably sealed and screwed to the second connection portion 220 .

[0167] In this embodiment, the cross-section of the flexible pipe 21 can be circular or quasi-circular, and the cross-sectional size of the flexible pipe 21 can be a fixed amount or a variable amount. The size of the cross-sectional size of the flexible pipe 21 can vary depending on the interface of the component to which it is connected, and this application does not make any specific restrictions here. The first connecting portion 210 can be a pipe section near the end of the flexible pipe 21. The cross-sectional structure of the first connecting portion 210 can be the same as or similar to the cross-sectional structure of the main body of the flexible pipe 21. In addition, in this embodiment, it is not ruled out that the first connecting portion 210 is a section of cross-sectional structure specially set at the end of the flexible pipe 21, and the cross-sectional structure of the main body of the flexible pipe 21 is different from the cross-sectional structure of the main body of the flexible pipe 21.

[0168] The cross-section of the first connecting portion 210 can be circular or quasi-circular. When the cross-section of the first connecting portion 210 is circular or quasi-circular, the overall structure of the pipeline is relatively simple, highly versatile, and has low manufacturing costs. Of course, in this embodiment, the cross-section of the first connecting portion 210 can also be configured in other configurations.

[0169] In this embodiment, the cross-section of the rigid pipeline 22 can be circular or quasi-circular, and the size of the cross-section of the rigid pipeline 22 can be a fixed amount or a variable amount. The size of the cross-section of the rigid pipeline 22 can vary depending on the interface of the component to which it is connected, etc., and this application does not make any specific restrictions here. The second connecting portion 220 can be a section of the rigid pipeline 22 near the end. The cross-section of the second connecting portion 220 can be circular or quasi-circular. The cross-sectional structure of the second connecting portion 220 can be the same as or similar to the cross-sectional structure of the main body of the rigid pipeline 22. In addition, in this embodiment, it is not ruled out that the second connecting portion 220 is a section of cross-sectional structure specially set at the end of the rigid pipeline 22, and the cross-sectional structure of the main body of the rigid pipeline 22 is different from the cross-sectional structure of the main body of the rigid pipeline 22.

[0170] When the cross-section of the second connecting portion 220 is circular or quasi-circular, the overall structure of the pipeline is relatively simple, highly versatile, and has low manufacturing costs. Of course, in this embodiment, other cross-sectional configurations of the second connecting portion 220 are also possible. In theory, the configurations of the second connecting portion 220 and the first connecting portion 210 are compatible, thereby achieving an optimal connection and sealing effect.

[0171] On the rear side near the wall, the flexible pipe 21 and the rigid pipe 22 may be interfered with by the mounting wall 5 during connection or removal, which may affect the connection or removal of the pipes. Furthermore, on the left or right side near the wall, the flexible pipe 21 and the rigid pipe 22 may be interfered with by cabinets, etc. during connection or removal, which may also affect the connection or removal of the pipes. In this embodiment, when the cross-sections of the first connecting portion 210 and the second connecting portion 220 are configured as circular or quasi-circular, the first connecting portion 210 and the second connecting portion 220 can be conveniently sealed by a removable sealing screw connection.

[0172] Furthermore, the first connection part 210 is inserted into the second connection part 220 and is detachably sealed and screwed together, or the second connection part 220 is inserted into the first connection part 210 and is detachably sealed and screwed together.

[0173] In this embodiment, when the first connection portion 210 and the second connection portion 220 are sealed and connected by a detachable sealing screw connection, the relative positional relationship between the first connection portion 210 and the second connection and the corresponding technical effects can be referred to the specific description of the above-mentioned embodiments of the non-detachable fixed sealing connection or the detachable sealing connection, and this application will not elaborate on them here. The detachable sealing screw connection can be a threaded connection, or other methods that can achieve sealing and connection, and this application does not limit the specifics here.

[0174] like Figure 1 As shown, in some embodiments, the width dimension W1 of the rigid tube 22 and / or the flexible tube 21 along the front-to-back direction X is between 10 cm and 30 cm.

[0175] Taking into account that the pipeline may need to be hidden in the cabinet during actual installation, the width dimension W1 of the pipeline (especially the pipe section hidden in the cabinet) along the front-to-back direction X needs to be smaller than the depth dimension of the cabinet in the front-to-back direction X. Generally, the depth dimension of the cabinet in the front-to-back direction X is about 30 cm to 33 cm. Therefore, the width dimension (or diameter dimension) of the rigid pipeline 22 and / or the flexible pipeline 21 that needs to be hidden in the cabinet part needs to be less than 30 cm. In addition, in order for the pipeline to be able to circulate oil smoke efficiently, its width dimension should not be too small, and generally needs to be greater than 10 cm. Of course, the above is mainly an example for the case where there is only one pipeline. The present application does not exclude the case where the pipeline includes multiple parallel pipelines. When the composition and structure of the pipeline change, the range of its size can also be adaptively adjusted.

[0176] In one embodiment, the rigid pipe 22 and / or the flexible pipe 21 is arranged close to the wall, or the distance between the rear side of the rigid pipe 22 and / or the flexible pipe 21 close to the wall and the wall is no more than 15 centimeters.

[0177] In this embodiment, all or part of the components of the range hood are arranged close to the mounting wall 5. Among them, at least the smoke hood 3 near the lower part and part of the pipeline connected to the smoke hood 3 can be arranged close to the mounting wall 5. Specifically, the pipeline that is at least partially arranged close to the wall may include a rigid pipeline 22, may include a flexible pipeline 21, or may include both a rigid pipeline 22 and a flexible pipeline 21. Specifically, the distance between the rigid pipeline 22 and / or the flexible pipeline 21 and the mounting wall 5 may be smaller, for example, directly contacting the mounting wall 5; or, the distance between the rear side of the rigid pipeline 22 and / or the flexible pipeline 21 and the wall does not exceed 15 centimeters, thereby ensuring that this part of the pipeline will not interfere with cabinets, etc. in the future, while also ensuring that the user's limited kitchen space is used to the greatest extent.

[0178] Of course, the present embodiments do not exclude the possibility that the distance between the aforementioned pipes and the mounting wall 5 exceeds 15 cm. For example, the distance between the rigid pipe 22 and / or the flexible pipe 21 and the mounting wall 5 can be slightly greater than 15 cm, such as 16 cm, 17 cm, etc. Even if the distance between the rigid pipe 22 and / or the flexible pipe 21 and the mounting wall 5 is slightly greater than 15 cm, as long as it does not interfere with cabinets, etc., substantially the same effect can be achieved.

[0179] In some embodiments, the rigid tube 22 is switchable between at least a first shape and a second shape.

[0180] In this embodiment, the rigid pipe 22 may be a pipe that can be switched between multiple shapes, and may be pre-adjusted to different shapes according to different installation environments, thereby further improving the adaptability of the range hood installation.

[0181] Specifically, the rigid pipe 22 may include a first rigid pipe segment 221 and a second rigid pipe segment 222 that are spliced, assembled, and sealed. In this embodiment, the rigid pipe 22 may include the first rigid pipe segment 221 and the second rigid pipe segment 222 that are sealed together. Of course, in some cases, it is not ruled out that the rigid pipe 22 may include more rigid pipe segments. In this embodiment, the first rigid pipe segment 221 and the second rigid pipe segment 222 are used as an example for illustration.

[0182] See also Figure 5 In the first embodiment, the rigid pipe 22 may include: a first rigid pipe section 221 and a second rigid pipe section 222 that are sealed and connected. When the rigid pipe 22 is in the first shape, the first rigid pipe section 221 is horizontally arranged or inclined relative to the vertical direction and is connected to the air inlet 12 of the fan box 1, and the second rigid pipe section 222 is vertically arranged and directly or indirectly sealed and connected to the air outlet of the smoke hood 3.

[0183] In the direction of smoke flow, the first rigid pipe section 221 can be located upstream of the second rigid pipe section 222. One end of the first rigid pipe section 221 can be sealedly connected to the air inlet 12 of the fan housing 1, and the other end can be sealedly connected to the second rigid pipe section 222. The second rigid pipe section 222 can be located between the first rigid pipe section 221 and the flexible pipe section. Alternatively, the second rigid pipe section 222 can be located between the flexible pipe section and the air outlet of the smoke hood 3. Alternatively, the second rigid pipe section 222 can directly connect the first rigid pipe section 221 to the air outlet of the smoke hood 3.

[0184] Taking the example of a direct, sealed connection between the first rigid pipe segment 221 and the second rigid pipe segment 222, the second rigid pipe segment 222 can be arranged vertically, and the first rigid pipe segment 221 can form a certain angle with the second rigid pipe segment 222. The degree of this angle can vary depending on the installation environment. Generally, to convert a vertically arranged pipeline to a horizontal or near-horizontal direction, the degree of this angle is usually around 90°. Of course, in some special cases, this angle can be set smaller or larger to avoid interfering structures.

[0185] The first rigid pipe section 221 cooperates with the second rigid pipe section 222 to change the first rigid pipe section 221 from a vertical direction to a horizontal direction or an inclined direction with a certain angle to the horizontal direction, thereby changing the direction of the pipeline, thereby flexibly adapting to the current installation environment, making the range hood have better installation adaptability. In addition, it can also change the propagation direction of the noise generated by the fan in the fan box 1, which is beneficial to reducing the impact of noise propagation to the user side.

[0186] The sealed connection between the first rigid pipeline 22 and the second rigid pipeline 22 can also be achieved by using the above-mentioned quick-connect sealing mechanism. The specific details will not be elaborated in this application.

[0187] Furthermore, the first rigid pipe section 221 is located above the suspended ceiling 4 .

[0188] The noise reduction structure 23 can be preferably arranged in the first rigid pipe section 221. When the noise reduction structure 23 is arranged in the first rigid pipe section 221 above the ceiling 4, the noise emitted by the fan can be reduced immediately, thereby improving the quietness of the range hood.

[0189] See also Figure 2 In the second embodiment, the rigid pipe 22 includes: a first rigid pipe section 221 and a second rigid pipe section 222 that are sealed and connected. When the rigid pipe 22 is in the second shape, the first rigid pipe section 221 and the second rigid pipe section 222 are both vertically arranged, the first rigid pipe section 221 is connected to the air inlet 12 of the fan box 1, and the second rigid pipe section 222 is directly or indirectly connected to the air outlet of the smoke hood 3.

[0190] This embodiment differs from the first embodiment described above primarily in that the first rigid pipe section 221 and the second rigid pipe section 222 are both vertically disposed. When the first rigid pipe section 221 and the second rigid pipe section 222 are directly and sealedly connected, they appear to be a single, integral rigid pipe section 22 when viewed from the outer tube.

[0191] The first rigid pipe 22 can be located above the second rigid pipe 22. The first rigid pipe section 221 is connected to the air inlet 12 of the fan box 1, and the second rigid pipe section 222 can be connected to the air outlet of the smoke hood 3 through the flexible pipe 21.

[0192] At least a portion of the second rigid pipe section 222 is located below the suspended ceiling 4 .

[0193] In the embodiment in which the rigid duct 22 has the second shape, generally, it has an interfering structure at the position of the suspended ceiling 4, resulting in the fan box 1 having a larger length dimension and a portion of the rigid duct 22 being unable to be installed horizontally along the front-to-back direction X. In this case, the air inlet 12 of the fan box 1 is set downward, and it only occupies a smaller height dimension in the front-to-back direction X, thereby meeting the requirements of the scenario in which the installation space above the suspended ceiling 4 is limited. When the fan box 1 and the rigid duct 22 are in the above-mentioned assembled relationship, the second rigid duct section 222 located at the bottom is at least partially located above the suspended ceiling 4.

[0194] See also Figure 4 In the third embodiment, the rigid pipe 22 includes: a first rigid pipe segment 221 and a second rigid pipe segment 222, and a deformable connecting portion 6 is provided between the first rigid pipe segment 221 and the second rigid pipe segment 222, and the first rigid pipe segment 221 and the second rigid pipe segment 222 are sealed and connected through the deformable connecting portion 6.

[0195] In this embodiment, the main difference from the first embodiment described above is that a deformable connection portion is further provided between the first rigid pipe section 221 and the second rigid pipe section 222. This deformable connection portion can realize a 180° spatial change of direction of the rigid pipe 22, thereby further improving the reversing capability of the rigid pipe 22, so that the range hood has optimal installation adaptability. The first rigid pipe section 221 and the second rigid pipe section 222 can be connected to the deformable connection portion in a sealed manner. Specifically, the sealed connection can be achieved by the quick-connect sealing mechanism described in the above embodiment, which will not be elaborated in detail in this application. Of course, other sealed connection methods can also be used.

[0196] The deformable connecting portion 6 may include: a universal joint and / or a flexible portion.

[0197] In this embodiment, the deformable connection portion 6 can specifically be a mechanism capable of achieving a 180° spatial change of direction. For example, the deformable connection portion 6 can be at least one of a universal joint and a flexible portion. Furthermore, the deformable connection portion 6 can also be in the form of a bellows, etc. Of course, the deformable connection portion can also take other forms and is not limited to the above description. Inspired by the technical essence of this application, those skilled in the art may make other modifications. However, as long as the functions and effects achieved are the same or similar to those of this application, they shall be covered by the scope of protection of this application.

[0198] In some embodiments, a noise reduction structure 23 is provided in the rigid pipe 22. By providing the noise reduction structure 23 in the rigid pipe 22, the impact of the noise generated by the fan during operation on the user can be further reduced.

[0199] Specifically, the noise reduction structure 23 may include sound-absorbing cotton and / or sound-isolating cotton and / or sound-absorbing wedges.

[0200] In one embodiment, the sound-absorbing cotton and / or the sound-insulating cotton are attached to the inner surface of the rigid pipe 22, and the rigid pipe 22 also includes a fixed bracket, which is connected to the inner surface of the rigid pipe 22 and is used to limit the sound-absorbing cotton and / or the sound-insulating cotton.

[0201] The noise reduction structure 23 may include at least one of sound-absorbing cotton and sound-insulating cotton. Figure 12 As shown, when the noise reduction structure 23 includes a sheet structure with a certain thickness, the sheet noise reduction structure 23 can be attached to the inner surface of the rigid pipe 22 by gluing.

[0202] Or, as Figure 13 As shown, the rigid pipe 22 may also be provided with a fixing bracket that can be connected to the rigid pipe 22. The fixing bracket cooperates with the rigid pipe 22 to form an annular accommodating cavity for mounting the noise reduction structure 23. For example, when the noise reduction structure 23 is a sheet-like structure, the noise reduction structure 23 can be located in the annular accommodating cavity between the rigid pipe 22 and the fixing bracket, thereby being reliably retained in place.

[0203] Furthermore, the fixing bracket may include a pressing plate 25 arranged around the sound-absorbing cotton and / or the sound-insulating cotton, and a microporous structure is provided on the pressing plate 25.

[0204] In this embodiment, the fixing bracket can be in the shape of a circumferentially distributed pressure plate 25, which can be arranged around the sound-absorbing cotton and / or the sound-insulating cotton. The sound-absorbing cotton and / or the sound-insulating cotton can be arranged in a fully enclosed circumferential direction to form a 360° annular sound-absorbing structure.

[0205] The surface of the pressure plate 25 may also be provided with a microporous structure, and the microporous structure cooperates with the sound-absorbing cotton and / or the sound-insulating cotton to form a double noise reduction structure, thereby achieving a more significant noise reduction effect.

[0206] like Figure 2 and Figure 5 As shown, in one embodiment, the fan box 1 may include a shell 11 and a fan, and the fan is arranged in the shell 11 and fixed on the shell 11; the air inlet 12 of the shell 11 is arranged on the side of the shell 11, and the axis of the fan is arranged in the vertical direction; or, the air inlet 12 of the shell 11 is arranged downward, and the axis of the fan is arranged in the horizontal direction or in the vertical direction.

[0207] In this embodiment, the fan box 1 can be installed in various positions to suit different installation requirements. Specifically, the fan box 1 can include a housing 11 and a fan fixed within the housing 11. The housing 11 can be an overall rectangular parallelepiped structure, with the length, width, and height dimensions being such that the length dimension is greater than the width dimension, and the height dimension W2 is greater than the width dimension.

[0208] like Figure 2 As shown, when the top space is limited, for example, when there are some interfering structures, the dimension in the front-to-back direction X may be smaller than the length or width. In this case, the air inlet 12 of the housing 11 can be set downward, and the axis of the fan can be set in the horizontal direction or in the vertical direction. In this way, the smallest height dimension of the housing 11 can be set along the front-to-back direction X. Therefore, by setting the fan box 1 against the wall, the range hood can be installed in the case of limited top space. In view of the above situation, the fan box 1 may be located partially above the ceiling 4 and partially below the ceiling 4.

[0209] like Figure 5 As shown, when the top space is sufficient, for example, the dimension X in the front-to-back direction is greater than the length dimension or the width dimension, the air inlet 12 of the shell 11 is arranged on the side of the shell 11, and the axis of the fan is arranged in the vertical direction, so that the fan box 1 can be installed on the upper part of the ceiling 4, thereby making full use of the structure of the ceiling 4, the bending structure of the pipeline, etc., to reduce the impact of the noise generated when the fan is working on the user.

[0210] Furthermore, the range hood may further include a silencer cover and / or a soundproof cover, and the silencer cover and / or the soundproof cover covers at least a portion of the housing 11 .

[0211] In this embodiment, in order to further reduce the impact of the noise generated by the fan during operation on the user and create a good kitchen cooking environment, a soundproof cover and / or a sound insulation cover may be provided outside the housing 11 .

[0212] By arranging at least one of a sound-absorbing cover and a sound-isolating cover outside the housing 11 , the fan serving as a noise source is enclosed in a small space to reduce its external radiation noise.

[0213] Among them, for the soundproofing cover, it can have a hollow cover body, and the cover body itself or the surface of the cover body is provided with sound-absorbing materials, such as sound-absorbing cotton, foam plastic, fiberboard, etc. These sound-absorbing materials can absorb the energy of sound waves, reduce the reflection and scattering of sound waves, and thus reduce the intensity of noise.

[0214] For the soundproof cover, it can also have a hollow cover body, which can use sound insulation materials, sound insulation felt, sound insulation cotton, sound insulation board, etc. These sound insulation materials have high density and sound absorption performance, which can effectively block the propagation of sound waves, surround the noise source, and reduce the transmission of noise.

[0215] In addition, a shock-absorbing structure, such as a rubber pad, a spring, etc., can be provided on the cover body of the soundproof cover or between the support structure connected to the cover body and the cover body. These materials can reduce the transmission of vibration and thus reduce the generation of noise.

[0216] The sound-absorbing cover and / or the sound-insulating cover are connected to the housing 11 , and / or the sound-absorbing cover and / or the sound-insulating cover can be connected to a wall.

[0217] In this embodiment, the sound-absorbing cover and / or the sound-insulating cover can be connected to at least one of the housing 11 and a wall in the installation environment. The connection method can vary depending on the actual fixing object. For example, when the sound-absorbing cover and / or the sound-insulating cover are connected to the housing 11, they can be fixed to the housing 11 using a detachable connection method, such as a threaded connection or a snap-on connection. Furthermore, the connection location can be sealed using materials such as sealing strips or sealant to prevent sound waves from leaking from the connection.

[0218] When the silencer cover and / or the soundproof cover is connected to the wall, an installation method that does not damage the wall can be adopted, such as fixing with traceless nails, magic buckles, nail-free glue, magnetic suction, etc., so as to protect the installation wall 5 and meet the user's demand of not wanting to damage the wall.

[0219] It should be noted that, in the description of this application, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be understood to indicate or imply relative importance. Furthermore, in the description of this application, unless otherwise specified, "plurality" means two or more.

[0220] The above-mentioned various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0221] The above are only a few embodiments of the present invention. Although the embodiments disclosed in the present invention are as above, the contents are only for the purpose of facilitating the understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art of the present invention may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in the present invention. However, the scope of patent protection of the present invention shall still be based on the scope defined by the appended claims.

Claims

1. A range hood, characterized in that: The range hood comprises: a fan box, pipes and a fume hood. The fan box is at least partially arranged above the ceiling, and the air inlet of the fan box is connected to the air outlet of the smoke hood through the pipeline; The fan box, the pipes and the smoke hood are arranged against the wall in sequence from top to bottom, or at least part of the pipes and the smoke hood are arranged against the wall in sequence from top to bottom and there is a preset interval between the fan box and the wall; The pipeline includes a flexible pipeline and a rigid pipeline that are sealed and connected. The rigid pipeline is a rigid plastic cigarette tube and / or a metal cigarette tube. The flexible pipeline includes at least one first connecting part, and the rigid pipeline includes at least one second connecting part. The first connecting part is used to be sealed and connected to the second connecting part.

2. The range hood according to claim 1, characterized in that: The first connection portion and the second connection portion are in a non-detachable fixed sealing connection or a detachable sealing connection.

3. The range hood according to claim 2, characterized in that: The flexible pipeline and the rigid pipeline are integrally formed, and the first connecting portion and the second connecting portion are integrally formed.

4. The range hood according to claim 2, characterized in that: The first connecting part is inserted into the second connecting part, and the outer surface of the first connecting part and the inner surface of the second connecting part are non-detachably fixed and sealedly connected or detachably sealedly connected, or the second connecting part is inserted into the first connecting part, and the inner surface of the first connecting part and the outer surface of the second connecting part are non-detachably fixed and sealedly connected or detachably sealedly connected.

5. The range hood according to claim 2, characterized in that: The cross sections of the first connecting portion and the second connecting portion are quadrilateral or quasi-quadrilateral, and the first connecting portion and the second connecting portion are connected by a quick-connect sealing mechanism at the rear side, left side or right side close to the wall.

6. The range hood according to claim 2, characterized in that: The cross sections of the first connection portion and the second connection portion are circular or quasi-circular, and the first connection portion is used for detachable sealing and screw connection with the second connection portion.

7. The range hood according to claim 1, characterized in that: The width of the rigid pipe and / or the flexible pipe along the front-to-back direction is between 10 cm and 30 cm.

8. The range hood according to claim 1 or 7, characterized in that: The rigid pipeline and / or the flexible pipeline is arranged close to the wall, or the distance between the rear side of the rigid pipeline and / or the flexible pipeline close to the wall and the wall does not exceed 15 centimeters.

9. The range hood according to claim 1, characterized in that: The rigid conduit is switchable between at least a first shape and a second shape.

10. The range hood according to claim 9, characterized in that: The rigid pipe includes: a first rigid pipe section and a second rigid pipe section that are sealed and connected. When the rigid pipe is in the first shape, the first rigid pipe section is horizontally arranged or inclined relative to the vertical direction and is connected to the air inlet of the fan box, and the second rigid pipe section is vertically arranged and connected to the air outlet of the smoke hood.

11. The range hood according to claim 10, characterized in that: The first rigid pipe section is located above the suspended ceiling.

12. The range hood according to claim 9, characterized in that: The rigid pipe includes: a first rigid pipe section and a second rigid pipe section that are sealed and connected. When the rigid pipe is in the second shape, the first rigid pipe section and the second rigid pipe section are both vertically arranged, the first rigid pipe section is connected to the air inlet of the fan box, and the second rigid pipe section is connected to the air outlet of the smoke hood.

13. The range hood according to claim 12, characterized in that: At least a portion of the second rigid pipe section is located below the suspended ceiling.

14. The range hood according to claim 9, characterized in that: The rigid pipeline includes: a first rigid pipe section and a second rigid pipe section, wherein a deformable connecting portion is provided between the first rigid pipe section and the second rigid pipe section, and the first rigid pipe section and the second rigid pipe section are sealed and connected via the deformable connecting portion.

15. The range hood according to claim 14, characterized in that: The deformable connecting portion includes: a universal joint and / or a flexible portion.

16. The range hood according to claim 9, characterized in that: The rigid pipeline comprises a first rigid pipe section and a second rigid pipe section which can be spliced, combined and sealed.

17. The range hood according to claim 1, characterized in that: A noise reduction structure is provided in the rigid pipeline.

18. The range hood according to claim 17, characterized in that: The noise reduction structure includes sound-absorbing cotton and / or sound-insulating cotton and / or sound-absorbing wedges.

19. The range hood according to claim 18, characterized in that: The sound-absorbing cotton and / or the sound-insulating cotton are attached to the inner surface of the rigid pipeline. The rigid pipeline also includes a fixed bracket, which is connected to the inner surface of the rigid pipeline and is used to limit the sound-absorbing cotton and / or the sound-insulating cotton.

20. The range hood according to claim 19, characterized in that: The fixing bracket includes a pressing plate arranged around the sound-absorbing cotton and / or the sound-insulating cotton, and the pressing plate is provided with a microporous structure.

21. The range hood according to claim 1, characterized in that: The cross-section of the pipeline is a quadrilateral or a quasi-quadrilateral, and one end of the pipeline is connected to the air outlet of the smoke hood on the rear side, left side or right side of the wall through a quick-connect sealing mechanism, and / or the other end of the pipeline is connected to the air inlet of the fan box on the rear side, left side or right side of the wall through a quick-connect sealing mechanism.

22. The range hood according to claim 1, characterized in that: The cross section of the pipeline is circular or quasi-circular, one end of the pipeline is sealed and screwed to the air outlet of the smoke hood, and / or the other end of the pipeline is sealed and screwed to the air inlet of the fan box.

23. The range hood according to claim 1, 21 or 22, characterized in that: The rigid pipeline is located below the flexible pipeline, the lower end of the rigid pipeline is sealed connected to the air outlet of the smoke hood, the upper end of the rigid pipeline is sealed connected to one end of the flexible pipeline, and the other end of the flexible pipeline is sealed connected to the air inlet of the fan box.

24. The range hood according to claim 1, 21 or 22, characterized in that: The flexible pipeline is located below the rigid pipeline, the lower end of the flexible pipeline is sealed connected to the air outlet of the smoke hood, the upper end of the flexible pipeline is sealed connected to one end of the rigid pipeline, and the other end of the rigid pipeline is sealed connected to the air inlet of the fan box.

25. The range hood according to claim 1, 21 or 22, characterized in that: The flexible pipeline includes a first flexible pipe segment and a second flexible pipe segment. The first flexible pipe segment, the rigid pipeline, and the second flexible pipe segment are arranged in sequence from top to bottom. One end of the first flexible pipe segment is sealed connected to the air inlet of the fan box, the other end of the first flexible pipe segment is sealed connected to one end of the rigid pipeline, the other end of the rigid pipeline is sealed connected to the upper end of the second flexible pipe segment, and the lower end of the second flexible pipe segment is sealed connected to the air outlet of the smoke hood.

26. The range hood according to claim 1, 21 or 22, characterized in that: The rigid pipe includes a first rigid pipe section and a second rigid pipe section. The first rigid pipe section, the flexible pipe, and the second rigid pipe section are arranged in sequence from top to bottom. One end of the first rigid pipe section is sealed connected to the air inlet of the fan box, the other end of the first rigid pipe section is sealed connected to one end of the flexible pipe, the other end of the flexible pipe is sealed connected to the upper end of the second rigid pipe section, and the lower end of the second rigid pipe section is sealed connected to the air outlet of the smoke hood.

27. The range hood according to claim 5 or 21, characterized in that: The quick-connect sealing mechanism includes: a sealing component and a plug-in mechanism and / or a clamping mechanism installed in cooperation with the sealing component.

28. The range hood according to claim 27, characterized in that: The plug-in mechanism includes a first docking portion and a second docking portion. The first docking portion is provided with a groove for installing the sealing member. When the second docking portion is inserted into the first docking portion, it can press against the sealing member.

29. The range hood according to claim 1, characterized in that: The fan box includes a shell and a fan, and the fan is arranged in the shell and fixed on the shell; the air inlet of the shell is arranged on the side of the shell, and the axis of the fan is arranged in the vertical direction; or, the air inlet of the shell is arranged downward, and the axis of the fan is arranged in the horizontal direction or in the vertical direction.

30. The range hood according to claim 29, characterized in that: The range hood further comprises a sound-absorbing cover and / or a sound-isolating cover, and the sound-absorbing cover and / or the sound-isolating cover covers at least a portion of the housing.

31. The range hood according to claim 30, characterized in that: The sound-absorbing cover and / or the sound-isolating cover are connected to the shell, and / or the sound-absorbing cover and / or the sound-isolating cover can be connected to the wall.

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