Seam shielding structure and fan range hood

Abstract

The invention provides a seam shielding structure and a fan range hood. The fan range hood comprises a fan body, a driving mechanism and an opening and closing panel, the fan body is provided with a movement gap for the driving mechanism to move, and the driving mechanism extends out of the fan body and is in transmission connection with the opening and closing panel. The seam shielding structure is provided with an avoiding hole for the driving mechanism to penetrate through, and the seam shielding structure is installed at the opening of the movement gap to shield the movement gap. The seam shielding structure can shield the movement gap at the driving mechanism, the overall appearance defect is avoided, the attractiveness of the fan range hood is improved, meanwhile, the seam shielding structure can also prevent insects, rats and the like from entering the fan body from the movement gap, the situation that the handle of a user stretches into the movement gap and is hurt by the driving mechanism can be prevented, and the user experience is improved. And the safety of the fan range hood is improved.

Description

Technical Field

[0001] The invention relates to the field of range hoods, and in particular to a gap covering structure and a fan hood. Background Art

[0002] The main body of the fan hood can be divided into two parts: the fan part and the hood part. The main function of the hood part is to absorb oil smoke, and the main function of the fan part is to circulate airflow in the kitchen to cool down. The fan part mainly cools the head and upper limbs of the cook by blowing high-speed airflow to the cook. The fan part includes a glass panel and a motion mechanism for controlling the opening and closing of the glass panel. There is a motion gap in the motion mechanism, which affects the overall appearance and also poses a safety risk. Summary of the invention

[0003] Based on this, it is necessary to provide a gap covering structure and a fan hood to address the problem that the movement gap of the fan hood body in the prior art affects the overall appearance and also poses a safety risk.

[0004] The technical solution is as follows:

[0005] On the one hand, a gap-shielding structure is provided, which is applied to a fan hood, wherein the fan hood comprises a fan body, a driving mechanism and an opening and closing panel, wherein the fan body is provided with a movement gap for the movement of the driving mechanism, the driving mechanism extends out of the fan body and is transmission-connected to the opening and closing panel, the gap-shielding structure is provided with an avoidance hole for the driving mechanism to pass through, and the gap-shielding structure is installed at the opening of the movement gap to cover the movement gap.

[0006] The technical solution is further described below:

[0007] In one embodiment, the seam covering structure includes an annular body and an elastic part. The annular body is installed at the opening of the movement gap. The number of the elastic part is at least one, and each of the elastic parts is arranged at intervals on the inner wall of the annular body so that the annular body and each of the elastic parts surround the avoidance hole.

[0008] In one embodiment, each of the elastic portions is located on two opposite sides of the annular body.

[0009] In one of the embodiments, the gap-covering structure is configured as an elastic gap-covering plate.

[0010] On the other hand, a fan hood is provided, comprising a fan body, a driving mechanism, an opening and closing panel and the gap covering structure, wherein the gap covering structure is installed on the fan body.

[0011] In one embodiment, the fan body includes a shell, the opening of the movement gap is arranged on the shell, the shell is provided with a first positioning portion, and the gap-shielding structure is provided with a second positioning portion, and the second positioning portion is configured to be positioned and cooperated with the first positioning portion when the gap-shielding structure blocks the movement gap.

[0012] In one embodiment, the first positioning portion is configured as a positioning column, the second positioning portion is configured as a positioning hole, the number of the positioning columns and the number of the positioning holes are both at least one, and the positioning holes are spaced apart at the edge of the gap-shielding structure and are correspondingly configured to the positioning columns;

[0013] Alternatively, the second positioning portion is configured as a positioning hole, the second positioning portion is configured as a positioning column, the number of the positioning columns and the number of the positioning holes are both at least one, and the positioning columns are spaced apart at the edge of the seam-covering structure and are correspondingly configured to the positioning holes.

[0014] In one of the embodiments, the driving mechanism includes a driving member and a transmission assembly drivingly connected to the driving member, the transmission assembly passes through the avoidance hole and is drivingly connected to the opening and closing panel, the fan body also includes a mounting bracket for mounting the driving member, the mounting bracket and the gap-covering structure are both located in the shell, and the mounting bracket is configured to press the gap-covering structure against the shell when the gap-covering structure blocks the movement gap.

[0015] In one embodiment, the shell includes a front shell and a rear shell, the opening of the movement gap is arranged on the front shell, the gap-covering structure is located in the front shell, and the rear shell is provided with a crimping portion, which is used to press the gap-covering structure onto the front shell.

[0016] In one of the embodiments, movement gaps are provided on the left and right sides of the fan body, and there are two driving mechanisms and two gap-shielding structures. The two gap-shielding structures are respectively installed at the openings of the two movement gaps to correspondingly block the two movement gaps. The two driving mechanisms respectively pass through the avoidance holes of the two gap-shielding structures and are both connected to the opening and closing panel in a transmission manner.

[0017] The gap covering structure and the fan hood in the above-mentioned embodiments, when in use, can cover the movement gap at the driving mechanism, avoiding overall appearance defects and improving the aesthetics of the fan hood. At the same time, the gap covering structure can also block insects, mice, etc. from entering the fan body through the movement gap, and can prevent users from putting their hands into the movement gap and being injured by the driving mechanism, thereby improving the safety of the fan hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The figure is a schematic structural diagram of a fan hood according to an embodiment.

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the fan module.

[0022] Figure 3 for Figure 2 Partial exploded view of the fan module.

[0023] Figure 4 for Figure 3 Schematic diagram of the structure of the gap-shielding structure.

[0024] Figure 5 for Figure 3 Schematic diagram of the structure of the front shell.

[0025] Figure 6 for Figure 3 Schematic diagram of the structure of the back shell.

[0026] Description of reference numerals:

[0027] 1. Fan hood; 10. Fan module; 100. Seam covering structure; 110. Avoidance hole; 120. Ring body; 130. Elastic part; 140. Second positioning part; 141. Positioning hole; 200. Fan body; 210. Movement gap; 220. Shell; 221. Front shell; 222. Rear shell; 223. Crimping part; 230. First positioning part; 231. Positioning column; 240. Mounting bracket; 300. Driving mechanism; 310. Driving member; 400. Opening and closing panel; 20. Hood module. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] like Figure 1 As shown, in one embodiment, the fan hood 1 includes a fan module 10 and a hood module 20. The fan module 10 is mounted on the hood module 20, and the hood module 20 is used to absorb oil smoke and discharge the oil smoke from the public flue. The fan module 10 takes in air from the top and discharges air from the front, blowing towards the user to reduce the temperature.

[0030] The fan module 10 can be configured as any fan structure in the prior art that is applied to a range hood and blows air to a user. The range hood module 20 can be configured as any range hood structure in the prior art. The fan module 10 can be installed on the range hood module 20 by snapping, plugging, screwing or other means.

[0031] Specifically in this embodiment, a high-speed rotating cross-flow impeller is provided inside the fan module 10. The cross-flow impeller is controlled to convert the filtered kitchen air into a high-speed airflow, which is blown toward the user's head and upper limbs to reduce the user's perceived temperature.

[0032] like Figure 2 As shown, optionally, the fan module 10 includes a fan body 200, a driving mechanism 300 and an opening and closing panel 400. The fan body 200 is provided with a movement gap 210 for the movement of the driving mechanism 300. The driving mechanism 300 extends out of the fan body 200 and is in transmission connection with the opening and closing panel 400. In this way, the fan module 10 is configured as an opening and closing mechanism. When the fan module 10 is turned on, the opening and closing panel 400 is opened under the drive of the driving mechanism 300 to ensure that the fan body 200 can smoothly discharge air; when the fan module 10 is turned off, the opening and closing panel 400 is closed under the drive of the driving mechanism 300, which can prevent oil smoke from entering the fan body 200 and improve the reliability of the fan module 10.

[0033] Specifically in this embodiment, when the fan module 10 is turned on, the driving mechanism 300 drives the opening and closing panel 400 to move upward to expose the front of the fan body 200. When the fan module 10 is turned off, the driving mechanism 300 drives the opening and closing panel 400 to move downward to cover the front of the fan body 200. In other embodiments, the driving mechanism 300 can also open or close by driving the opening and closing panel 400 to rotate relative to the fan body 200.

[0034] like Figure 3 As shown, in one embodiment, a gap shielding structure 100 is provided, which is applied to the fan hood 1. The gap shielding structure 100 is provided with an avoidance hole 110 for the driving mechanism 300 to pass through, and the gap shielding structure 100 is installed at the opening of the movement gap 210 to shield the movement gap 210.

[0035] The gap covering structure 100 in the above embodiment, when in use, can cover the movement gap 210 at the driving mechanism 300 to avoid overall appearance defects and improve the aesthetics of the fan hood 1. At the same time, the gap covering structure 100 can also block insects, mice, etc. from entering the fan body 200 through the movement gap 210, and can prevent users from putting their hands into the movement gap 210 and being injured by the driving mechanism 300, thereby improving the safety of the fan hood 1.

[0036] like Figure 4 As shown, further, the gap-shielding structure 100 includes an annular body 120 and an elastic part 130. The annular body 120 is installed at the opening of the movement gap 210. The number of the elastic part 130 is at least one. The elastic parts 130 are arranged at intervals on the inner side wall of the annular body 120, so that the annular body 120 and the elastic parts 130 are surrounded to form an avoidance hole 110. In this way, the elastic part 130 can be elastically deformed to ensure that the gap-shielding structure 100 does not interfere with the movement of the driving mechanism 300. At the same time, the elastic part 130 can also reduce the size of the avoidance hole 110, so that when the driving mechanism 300 passes through the avoidance hole 110, the gap-shielding structure 100 can block the movement gap 210 to a greater extent, thereby improving the reliability of the gap-shielding structure 100.

[0037] The shape of the annular body 120 can be flexibly adjusted according to the actual use needs. The number of the elastic parts 130 can be flexibly adjusted according to the actual use needs. Specifically in this embodiment, the gap-shielding structure 100 is set to a square shape. Each elastic part 130 is integrally formed with the annular body 120.

[0038] Optionally, the gap-shielding structure 100 is configured as an elastic gap-shielding plate, so as to improve the convenience of processing and manufacturing the gap-shielding structure 100. In other embodiments, the gap-shielding structure 100 can also be configured as an elastic pad or other elastic structures.

[0039] like Figure 4As shown, optionally, each elastic part 130 is respectively located on opposite sides of the annular body 120. In this way, the multiple elastic parts 130 divide the inner hole of the annular body 120 into multiple areas. When the driving mechanism 300 extends from the avoidance hole 110, the elastic part 130 in contact with the driving mechanism 300 undergoes elastic deformation to avoid, while the elastic part 130 not in contact with the driving mechanism 300 maintains a shielding state, thereby minimizing the size of the avoidance hole 110 and improving the reliability of the gap shielding structure 100.

[0040] Specifically in this embodiment, each elastic portion 130 is located on two opposite sides of the annular body 120 and is symmetrically arranged.

[0041] like Figure 3 , Figure 5 and Figure 6 As shown, in one embodiment, the fan body 200 includes a housing 220, and the opening of the motion gap 210 is arranged on the housing 220. The housing 220 is provided with a first positioning portion 230. The gap shielding structure 100 is provided with a second positioning portion 140. The second positioning portion 140 is configured to be positioned and matched with the first positioning portion 230 when the gap shielding structure 100 shields the motion gap 210. In this way, by using the positioning and matching of the first positioning portion 230 and the second positioning portion 140, the gap shielding structure 100 can be quickly and accurately installed at the opening of the motion gap 210, thereby improving the convenience of installing the gap shielding structure 100.

[0042] The first positioning portion 230 can be configured as a positioning column 231, a positioning protrusion, a positioning block or other positioning structures, and the second positioning portion 140 can be correspondingly configured as a positioning hole 141, a positioning groove, a positioning block or other positioning structures. The number of the first positioning portion 230 and the second positioning portion 140 can be flexibly adjusted according to actual use needs.

[0043] like Figure 5 and Figure 6 As shown, optionally, the first positioning portion 230 is configured as a positioning column 231. The second positioning portion 140 is configured as a positioning hole 141. The number of positioning columns 231 and the number of positioning holes 141 are both at least one. The positioning holes 141 are spaced apart at the edge of the gap-covering structure 100 and are correspondingly arranged to the positioning columns 231. In this way, the positioning columns 231 can limit the gap-covering structure 100 through the positioning holes 141, thereby preventing the gap-covering structure 100 from moving in a direction perpendicular to the axis of the positioning columns 231 when it is installed at the opening of the movement gap 210, thereby ensuring that the gap-covering structure 100 can stably and reliably cover the movement gap 210, thereby improving the reliability of the fan hood 1.

[0044] Specifically in the embodiment, the number of the positioning holes 141 is four, and the four positioning holes 141 are respectively disposed at four corners of the gap-shielding structure 100 .

[0045] In other embodiments, the second positioning portion 230 may also be configured as a positioning hole 141. The second positioning portion 140 is correspondingly configured as a positioning column 231. The number of the positioning columns 231 and the number of the positioning holes 141 are both at least one, and each positioning column 231 is disposed at intervals at the edge of the gap-shielding structure 100 and is correspondingly disposed to each positioning hole 141.

[0046] like Figure 3 As shown, in one embodiment, the driving mechanism 300 includes a driving member 310 and a transmission assembly that is transmission-connected to the driving member 310. The transmission assembly passes through the avoidance hole 110 and is transmission-connected to the opening and closing panel 400. The fan body 200 also includes a mounting bracket 240 for mounting the driving member 310, and the mounting bracket 240 and the gap-shielding structure 100 are both located in the housing 220. The mounting bracket 240 is configured to press the gap-shielding structure 100 against the housing 220 when the gap-shielding structure 100 blocks the movement gap 210. In this way, the mounting bracket 240 can limit the gap-shielding structure 100, ensuring that the gap-shielding structure 100 will not move along the axial direction of the positioning column 231 due to friction with the transmission assembly after being installed at the opening of the movement gap 210, thereby preventing the gap-shielding structure 100 from falling off from the opening of the movement gap 210 and improving the reliability of the fan hood 1.

[0047] The mounting bracket 240 may be fixed in the housing 220 by snapping, plugging, screwing or other methods.

[0048] Specifically in this embodiment, the motion gap 210 has an opening and a motion cavity. The opening is arranged on the front side of the shell 220 and is connected to the front side of the motion cavity. The width of the opening is smaller than the width of the motion cavity. When the gap-shielding structure 100 is installed at the opening of the motion gap 210, along the axial direction of the opening, the projection area of ​​the avoidance hole 110 is located within the projection area of ​​the opening. The mounting bracket 240 is fixed in the shell 220 and is arranged with the inner wall of the shell 220 to form a motion cavity. Each positioning column 231 is arranged on the inner side wall of the motion cavity on the side close to the opening.

[0049] Specifically in this embodiment, the driving member 310 is configured as a stepper motor with an output shaft. The stepper motor is mounted on the mounting bracket 240, and the output shaft extends into the motion cavity. The transmission assembly is configured as a connecting rod transmission structure, one end of the connecting rod transmission structure is connected to the output end, and the other end passes through the avoidance hole 110 and is connected to the opening and closing panel 400.

[0050] like Figure 3 , Figure 5 and Figure 6As shown, in one embodiment, the housing 220 includes a front shell 221 and a rear shell 222. The opening of the movement gap 210 is provided on the front shell 221, and the gap-shielding structure 100 is located inside the front shell 221. The rear shell 222 is provided with a crimping portion 223, and the crimping portion 223 is used to press the gap-shielding structure 100 onto the front shell 221. In this way, the crimping portion 223 can limit the gap-shielding structure 100, ensuring that after the gap-shielding structure 100 is installed at the opening of the movement gap 210, it will not move along the axial direction of the positioning column 231 due to friction with the transmission assembly, thereby preventing the gap-shielding structure 100 from falling off from the opening of the movement gap 210, thereby improving the reliability of the fan hood 1.

[0051] Specifically in this embodiment, when the front shell 221 and the rear shell 222 are connected as one body and the gap-shielding structure 100 blocks the moving gap 210 , the crimping portion 223 presses the gap-shielding structure 100 onto the front shell 221 .

[0052] The crimping portion 223 may be configured as a crimping plate, a crimping column or other crimping structures. The number of the crimping portions 223 may be flexibly adjusted according to actual use needs. The front shell 221 may be connected to the rear shell 222 as a whole by snap-on, plug-in, screw-on or other detachable means. Specifically in this embodiment, the crimping portion 223 is integrally formed with the rear shell 222.

[0053] Specifically in this embodiment, along the axial direction of the positioning column 231 , any two of the positioning column 231 , the mounting bracket 240 and the crimping portion 223 are staggered to ensure that there is no interference between the three.

[0054] Specifically in this embodiment, the axial direction of the positioning column 231 is set to the front-to-back direction. The movement gap 210 extends in the up-down direction. The two sides of the gap-shielding structure 100 along the left-right direction are respectively set to the first side and the second side. When the front shell 221 and the rear shell 222 are connected as a whole, and the gap-shielding structure 100 blocks the movement gap 210, the mounting bracket 240 presses one of the first side and the second side onto the front shell 221, and the crimping portion 223 presses the other of the first side and the second side onto the front shell 221. In this way, the gap-shielding structure 100 can be fixed using the existing components of the fan module 10, without adding new parts and costs, thereby improving the practicality of the fan hood 1.

[0055] like Figure 2 and Figure 3As shown, in one embodiment, a movement gap 210 is provided on both the left and right sides of the fan body 200. There are two driving mechanisms 300 and two gap-shielding structures 100. The two gap-shielding structures 100 are respectively installed at the openings of the two movement gaps 210 to correspondingly shield the two movement gaps 210. The two driving mechanisms 300 pass through the avoidance holes 110 of the two gap-shielding structures 100, respectively, and are both connected to the opening and closing panel 400 in a transmission manner. In this way, the two driving mechanisms 300 can apply driving force to the left and right ends of the opening and closing panel 400, respectively, and the force on the opening and closing panel 400 is evenly distributed to ensure that the opening and closing panel 400 can be smoothly opened or closed, thereby improving the reliability of the fan hood 1.

[0056] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0057] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0059] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0061] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0062] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A gap-shielding structure, applied to a fan hood (1), the fan hood (1) comprising a fan body (200), a driving mechanism (300) and an opening and closing panel (400), the fan body (200) being provided with a movement gap (210) for movement of the driving mechanism (300), the driving mechanism (300) extending out of the fan body (200) and being drivingly connected to the opening and closing panel (400), characterized in that: The gap-covering structure (100) is provided with an avoidance hole (110) for the driving mechanism (300) to pass through, and the gap-covering structure (100) is installed at the opening of the movement gap (210) to cover the movement gap (210).

2. The seam-covering structure according to claim 1, characterized in that: The gap-shielding structure (100) comprises an annular body (120) and an elastic part (130), wherein the annular body (120) is installed at the opening of the movement gap (210), the number of the elastic part (130) is at least one, and each of the elastic parts (130) is arranged at intervals on the inner side wall of the annular body (120), so that the annular body (120) and each of the elastic parts (130) surround and form the avoidance hole (110).

3. The seam-covering structure according to claim 2, characterized in that: Each of the elastic parts (130) is located on two opposite sides of the annular body (120).

4. The seam-covering structure according to any one of claims 1 to 3, characterized in that: The gap-shielding structure (100) is configured as an elastic gap-shielding plate.

5. A fan hood, characterized in that: It comprises a fan body (200), a driving mechanism (300), an opening and closing panel (400), and a gap-shielding structure (100) according to any one of claims 1 to 4, wherein the gap-shielding structure (100) is mounted on the fan body (200).

6. The fan hood according to claim 5, characterized in that: The fan body (200) comprises a shell (220), an opening of the movement gap (210) is arranged on the shell (220), the shell (220) is provided with a first positioning portion (230), the gap-shielding structure (100) is provided with a second positioning portion (140), and the second positioning portion (140) is configured to be positioned and matched with the first positioning portion (230) when the gap-shielding structure (100) shields the movement gap (210).

7. The fan hood according to claim 6, characterized in that: The first positioning portion (230) is configured as a positioning column (231), the second positioning portion (140) is configured as a positioning hole (141), the number of the positioning columns (231) and the number of the positioning holes (141) are both at least one, and each of the positioning holes (141) is arranged at intervals on the edge of the seam-covering structure (100) and is arranged corresponding to each of the positioning columns (231); Alternatively, the second positioning portion (230) is configured as a positioning hole (141), the second positioning portion (140) is configured as a positioning column (231), the number of the positioning columns (231) and the number of the positioning holes (141) are both at least one, and each of the positioning columns (231) is arranged at intervals on the edge of the seam-covering structure (100) and is arranged corresponding to each of the positioning holes (141).

8. The fan hood according to claim 6, characterized in that: The driving mechanism (300) comprises a driving member (310) and a transmission assembly drivingly connected to the driving member (310); the transmission assembly passes through the avoidance hole (110) and is drivingly connected to the opening and closing panel (400); the fan body (200) further comprises a mounting bracket (240) for mounting the driving member (310); the mounting bracket (240) and the gap-shielding structure (100) are both located in the housing (220); the mounting bracket (240) is configured to press the gap-shielding structure (100) against the housing (220) when the gap-shielding structure (100) covers the movement gap (210).

9. The fan hood according to claim 6, characterized in that: The housing (220) comprises a front housing (221) and a rear housing (222); the opening of the movement gap (210) is arranged on the front housing (221); the gap-shielding structure (100) is located inside the front housing (221); the rear housing (222) is provided with a crimping portion (223); the crimping portion (223) is used to press the gap-shielding structure (100) onto the front housing (221).

10. The fan hood according to claim 6, characterized in that: The fan body (200) is provided with a movement gap (210) on both the left and right sides. The driving mechanism (300) and the gap-shielding structure (100) are both provided in pairs. The two gap-shielding structures (100) are respectively installed at the openings of the two movement gaps (210) to correspondingly shield the two movement gaps (210). The two driving mechanisms (300) respectively pass through the avoidance holes (110) of the two gap-shielding structures (100) and are both connected to the opening and closing panel (400) in a transmission manner.

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