Panel fixing device and exhaust fan with same
By designing a panel fixing device that adopts a combination of support frame, panel and fixing parts, the problem of high hardware costs in the prior art is solved, and the panel is conveniently disassembled and assembled and the overall product cost is reduced.
Patent Information
- Application Number
- CN202421642412.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-07-11
AI Technical Summary
The existing exhaust fan panel fixtures use hardware, resulting in high production costs and corresponding increase in overall product costs.
A panel fixing device is designed, using a combination of support frame, panel and fixing parts. The design of clamping the mounting plate is achieved by realizing the disassembly and assembly and connection between the panel and the support frame, replacing traditional hardware.
The panel is more conveniently disassembled and assembled, reducing the manufacturing cost of the overall product, especially by using fixtures made of plastic, which significantly reduces the cost.
Smart Images

Figure CN222772393U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of exhaust fans, in particular to a panel fixing device and an exhaust fan having the same. Background Art
[0002] Some electrical appliances, such as exhaust fans, need to be installed with panels after being installed on the ceiling or other locations. Exhaust fans are a type of air conditioning appliance that uses a motor to drive the fan blades to rotate and drive the air flow, so that the indoor and outdoor air can be exchanged for ventilation. Installing a panel on the exhaust fan can not only play an aesthetic role, but also protect the exhaust fan without affecting the ventilation of the exhaust fan, preventing foreign objects from being sucked in and causing damage to the exhaust fan. The most common panels are currently connected to the appliance through hardware (such as springs, etc.). The production cost of these hardware is relatively high, which in turn increases the overall cost of the product accordingly. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a panel fixing device and an exhaust fan having the same.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] According to a first aspect of the present invention, a panel fixing device comprises a support frame having a middle through hole, an inner side wall of the middle through hole being provided with a mounting plate; a panel located below the support frame; a fixing member, the fixing member comprising a fixed mounting portion and at least two clamping plates, the fixed mounting portion being connected to the panel, a clamping gap and a clamping opening being left between the corresponding two clamping plates, so that the clamping gap position of the clamping plate can clamp the mounting plate, and the panel can be connected to the support frame through the fixing member.
[0006] According to some embodiments of the present invention, the mounting plate is a horizontally arranged flat plate-shaped structure, and the corresponding two clamping plates can clamp the upper and lower sides of the mounting plate.
[0007] According to some embodiments of the present utility model, a mounting plate reinforcement rib is provided between the mounting plate and the inner side wall of the middle through hole.
[0008] According to some embodiments of the utility model, there are at least two mounting plates arranged on the left and right sides of the middle through hole, each mounting plate extends toward the inner side of the middle through hole, and there are at least two fixing members arranged on the left and right sides of the panel.
[0009] According to some embodiments of the present invention, the clamping opening faces the front side or the rear side.
[0010] According to some embodiments of the utility model, a clamping protrusion is provided on one end of the clamping plate located at the clamping opening, and when the clamping gap position of the clamping plate clamps the mounting plate, the clamping protrusion clamps the mounting plate.
[0011] According to some embodiments of the utility model, a panel boss is provided on the upper side of the panel, and mounting holes are provided on the panel boss and the fixed mounting part, and the mounting hole of the panel boss and the mounting hole of the fixed mounting part are connected by screws.
[0012] According to some embodiments of the present invention, a boss reinforcement rib is provided on the boss outer side wall 211 of the panel boss, and the boss reinforcement rib is connected to the upper end surface 201 of the panel.
[0013] According to some embodiments of the utility model, a limiting column is provided on the panel, and the support frame has a limiting portion. When the panel is connected to the support frame, the limiting column supports the limiting portion to leave a ventilation gap between the panel and the support frame.
[0014] According to the panel fixing device of the first aspect embodiment of the utility model, there are at least the following technical effects: when the panel needs to be installed, the clamping opening of the fixing piece is aligned with the mounting plate and the panel is moved so that the clamping plate clamps the mounting plate, so that the installation of the panel can be easily completed, so that the panel on the electrical appliance can be more conveniently disassembled and assembled; the fixing piece replaces the original hardware to achieve the disassembly and assembly connection between the panel and the support frame; the design of the fixing piece clamping the mounting plate through the clamping plate allows the fixing piece to be made of plastic, and the manufacturing cost is significantly lower than the cost of hardware manufacturing, thereby reducing the overall product manufacturing cost.
[0015] The exhaust fan according to the second aspect of the present invention comprises the panel fixing device according to the first aspect of the present invention.
[0016] The exhaust fan according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: by adopting the above-mentioned panel fixing device, when the panel needs to be installed, the clamping opening of the fixing piece is aligned with the mounting plate and the panel is moved so that the clamping plate clamps the mounting plate, so that the installation of the panel can be easily completed, and the panel on the electrical appliance can be more conveniently disassembled and assembled; the fixing piece replaces the original hardware to achieve the disassembly and assembly connection between the panel and the support frame; the design of the fixing piece clamping the mounting plate through the clamping plate allows the fixing piece to be made of plastic, and the manufacturing cost is significantly lower than the cost of hardware manufacturing, thereby reducing the overall exhaust fan product manufacturing cost.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 It is a three-dimensional diagram of the panel fixing device of the utility model and the exhaust fan having the same;
[0020] Figure 2 It is a three-dimensional diagram of the panel fixing device of the utility model and the exhaust fan having the same from another angle;
[0021] Figure 3 This is a structural exploded view of the panel fixing device of the utility model and the exhaust fan having the same;
[0022] Figure 4 It is a three-dimensional diagram of the fixing member in the utility model;
[0023] Figure 5 It is a three-dimensional diagram of the panel boss in the utility model.
[0024] Reference numerals:
[0025] Support frame 100, middle through hole 110, mounting plate 120, mounting plate reinforcement rib 130, limiting part 140, limiting hole 141; panel 200, upper end surface 201, panel boss 210, boss outer side wall 211, boss reinforcement rib 220, boss reinforcement rib inclined surface 221, limiting column 230, ventilation gap 240; fixing part 300, fixed mounting part 310, clamping plate 320, clamping protrusion 321, protrusion inclined surface 322, clamping surface 323, clamping plate fixed end 324, clamping gap 330, clamping opening 340. DETAILED DESCRIPTION
[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 invention.
[0028] In the description of the present utility model, the meaning of "a plurality" is more than two, and "greater than", "less than", "exceed" etc. are understood to exclude the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0030] Reference below Figure 1 and Figure 2 A panel fixing device according to an embodiment of the first aspect of the utility model is described.
[0031] like Figure 1 and Figure 2 As shown, the panel fixing device according to the embodiment of the utility model includes a support frame 100 , a panel 200 and a fixing member 300 .
[0032] A support frame 100, the support frame 100 has a middle through hole 110, and a mounting plate 120 is arranged on the inner wall of the middle through hole 110; a panel 200, which is located below the support frame 100; a fixing member 300, the fixing member 300 includes a fixed mounting portion 310 and at least two clamping plates 320, the fixed mounting portion 310 is connected to the panel 200, and a clamping gap 330 and a clamping opening 340 are left between the corresponding two clamping plates 320, so that the clamping gap 330 position of the clamping plate 320 can clamp the mounting plate 120, and the panel 200 can be connected to the support frame 100 through the fixing member 300.
[0033] For example Figure 2 and Figure 3 As shown, the support frame 100 and the electrical appliance are installed at a predetermined installation position. The support frame 100 has a central through hole 110 as a working space for the electrical appliance to prevent the support frame 100 from affecting the electrical appliance. The mounting plate 120 is located on the inner wall of the central through hole 110, so that the mounting plate 120 does not need to extend out of the support frame 100 to occupy additional space while ensuring that the panel 200 can be installed.
[0034] The panel 200 is located below the support frame 100 and can be detached. It is conceivable that the panel fixing device of the embodiment of the utility model can adjust the installation direction according to the predetermined position.
[0035] For example Figure 2 and Figure 4As shown, the fixing member 300 includes a fixing installation portion 310 and at least two clamping plates 320, wherein the fixing member 300 is connected to the panel 200 through the fixing installation portion 310. A clamping gap 330 and a clamping opening 340 are left between the two corresponding clamping plates 320, wherein the clamping gap 330 of the clamping plate 320 is responsible for clamping the mounting plate 120, and the elastic characteristics of the clamping plate 320 itself enable the clamping opening 340 to be slightly adjusted and enlarged, so that the clamping plate 320 can clamp the mounting plate 120 more easily. In this way, the panel 200 can be detachably connected to the support frame 100 through the fixing member 300.
[0036] During actual installation, refer to Figure 2 , the support frame 100 is pre-installed at the predetermined installation position, and the fixing member 300 is installed on the panel 200. When the panel 200 needs to be installed, the clamping opening 340 of the fixing member 300 is aligned with the mounting plate 120 on the support frame 100, and then the panel 200 is moved so that the mounting plate 120 is inserted into the clamping gap 330 from the clamping opening 340, so that the clamping plate 320 clamps the mounting plate 120. In this way, the installation of the panel 200 is completed.
[0037] On the contrary, when the panel 200 is disassembled, the panel 200 is moved so that the mounting plate 120 is separated from the clamping opening 340 and the panel 200 can be disassembled.
[0038] According to the panel fixing device of the embodiment of the utility model, the panel 200 on the electrical appliance can be more conveniently disassembled and assembled by designing that the mounting plate 120 on the support frame 100 cooperates with the fixing member 300 on the panel 200; the panel 200 and the support frame 100 can be disassembled and assembled by replacing the original hardware with the fixing member 300; the fixing member 300 clamps the mounting plate 120 with the clamping plate 320, so that the fixing member 300 can be made of plastic, and the manufacturing cost is significantly lower than the cost of manufacturing hardware, thereby reducing the overall product manufacturing cost.
[0039] In some specific embodiments of the present invention, the support frame 100 is connected to an electrical appliance.
[0040] In some specific embodiments of the present invention, the support frame 100 is installed separately from the electrical appliance at a predetermined installation position.
[0041] In some embodiments of the present invention, the mounting plate 120 is a horizontally arranged flat plate structure, and the corresponding two clamping plates 320 can clamp the upper and lower sides of the mounting plate 120, so that when the fixing member 300 clamps the mounting plate 120, it is not easy to fall out, making the panel 200 more securely installed.
[0042] In some embodiments of the present invention, referring to Figure 3A mounting plate reinforcing rib 130 is provided between the mounting plate 120 and the inner wall of the middle through hole 110 to improve the structural strength of the mounting plate 120 so that the mounting plate 120 is not easily broken.
[0043] In some embodiments of the present invention, there are at least two mounting plates 120 arranged on the left and right sides of the middle through hole 110, each mounting plate 120 extends toward the inner side of the middle through hole 110, and there are at least two fixing members 300 arranged on the left and right sides of the panel 200. This reduces the extra space occupied by the mounting plates 120 and makes the fixing members 300 more stable and reliable when clamping the mounting plates 120.
[0044] In some specific embodiments of the present invention, the support frame 100 has a center line extending along the front-to-back direction, each mounting plate 120 extends toward the center line, and there are at least two fixing members 300 which are arranged on the left and right sides of the panel 200 .
[0045] In a further embodiment of the present invention, the clamping opening 340 faces the front side or the rear side. In this way, when installing the panel 200, the clamping openings 340 of each fixing member 300 face the same direction, which makes it easier to align with the mounting plate 120 on the support frame 100. Then, the panel 200 is moved along the center line direction, so that the clamping plate 320 clamps the mounting plate 120, and the installation of the panel 200 is easier to complete.
[0046] In some specific embodiments of the present invention, refer to Figure 4 The clamping plate 320 has a clamping surface 323 , and the clamping plate 320 clamps the mounting plate 120 through the clamping surface 323 .
[0047] In a further embodiment of the present invention, the clamping surface 323 is a planar structure or an arc-shaped structure.
[0048] In a further embodiment of the present invention, anti-slip grooves are provided on the clamping surface 323 to increase the friction between the clamping plate 320 and the mounting plate 120 after clamping the mounting plate 120 .
[0049] In some specific embodiments of the present invention, the clamping plate 320 is connected to the fixed installation portion 310 via the clamping plate fixing end 324 .
[0050] In some specific embodiments of the present invention, a plurality of groups of clamping plates 320 are disposed on the fixing member 300 , and each group of clamping plates 320 consists of two clamping plates 320 that cooperate with each other to clamp the mounting plate 120 .
[0051] In some embodiments of the utility model, a clamping protrusion 321 is provided on one end of the clamping opening 340 of the clamping plate 320. When the clamping gap 330 of the clamping plate 320 clamps the mounting plate 120, the clamping protrusion 321 clamps the mounting plate 120, so that the clamping plate 320 is not easy to loosen after clamping the mounting plate 120, thereby further making the panel 200 more securely installed.
[0052] In some specific embodiments of the present invention, a protrusion slope 322 is provided on the clamping protrusion 321. The design of the protrusion slope 322 makes it easier for the mounting plate 120 to slide through the clamping opening 340 and snap into the clamping gap 330 when the panel 200 is moved after the clamping opening 340 is aligned with the mounting plate 120, making it easier to install the panel 200.
[0053] In some embodiments of the present invention, referring to Figure 5 The panel 200 is provided with a panel boss 210 on the upper side, and mounting holes are provided on the panel boss 210 and the fixing and mounting portion 310, and the mounting holes of the panel boss 210 and the fixing and mounting portion 310 are connected by screws. The design of the panel boss 210 not only makes it easier to install the fixing member 300 and the panel 200, but also can minimize the impact on the overall structure of the panel 200.
[0054] In some embodiments of the present invention, a space is reserved above the fixed installation portion 310 for screws to pass through the installation holes of the fixed installation portion 310 for installation.
[0055] In some embodiments of the utility model, a boss reinforcement rib 220 is provided on the boss outer side wall 211 of the panel boss 210, and the boss reinforcement rib 220 is connected to the upper end surface 201 of the panel 200. The boss reinforcement rib 220 improves the structural strength of the panel boss 210, making the connection between the panel boss 210 and the fixed installation part 310 more stable and reliable.
[0056] In some specific embodiments of the present invention, the boss reinforcement ribs 220 are arranged on the left and right sides of the panel boss 210 .
[0057] In some specific embodiments of the present utility model, a boss reinforcement rib inclined surface 221 is provided on the boss reinforcement rib 220 to improve the structural strength of the boss reinforcement rib 220, so that the panel boss 210 has improved structural strength and is not easy to break.
[0058] In a further embodiment of the present invention, the boss reinforcement rib 220 on the panel boss 210 extends in the direction in which the clamping plate 320 extends.
[0059] In some embodiments of the present invention, referring to Figure 1 , Figure 2, the panel 200 is provided with a limiting column 230, and the support frame 100 has a limiting portion 140. When the panel 200 is connected to the support frame 100, the limiting column 230 supports the limiting portion 140 so that a ventilation gap 240 is left between the panel 200 and the support frame 100. In this way, the panel 200 is installed on the support frame 100, and the limiting column 230 plays a limiting role to ensure that there is enough space between the panel 200 and the support frame 100 as the ventilation gap 240, and the ventilation gap 240 can be used as a gap for ventilation or heat dissipation. In addition, the limiting column 230 supports the limiting portion 140, which also makes the panel 200 more firmly installed.
[0060] In a further embodiment of the present invention, referring to Figure 2 , Figure 3 , the limiting part 140 is provided with a limiting hole 141. In this way, after the panel 200 is installed, the limiting column 230 presses against the limiting hole 141 on the limiting part 140 to prevent the limiting column 230 and the limiting part 140 from slipping and causing the panel 200 to be misaligned or even loosened, which is equivalent to playing a role in positioning the panel 200.
[0061] It is conceivable that, since the limiting hole 141 is only used as a limiting structure, the depth of the limiting hole 141 does not need to be very deep, and does not affect the process of aligning the clamping opening 340 of the fixing member 300 with the mounting plate 120 and moving the panel 200 to make the clamping plate 320 clamp the mounting plate 120. The specific depth of the limiting hole 141 is determined according to the shape and size of the overall product.
[0062] Furthermore, if Figure 1 and Figure 2 As shown, the exhaust fan according to the second embodiment of the utility model includes the panel fixing device according to the first embodiment of the utility model.
[0063] According to the exhaust fan of the embodiment of the utility model, by using the above panel fixing device, when the panel 200 needs to be installed, the clamping opening 340 of the fixing member 300 is aligned with the mounting plate 120 on the support frame 100, and then the panel 200 is moved so that the mounting plate 120 is clamped into the clamping gap 330 from the clamping opening 340, so that the clamping plate 320 clamps the mounting plate 120. In this way, the installation of the panel 200 is completed.
[0064] By designing that the mounting plate 120 on the support frame 100 cooperates with the fixing part 300 on the panel 200, the panel 200 on the electrical appliance can be disassembled and assembled more conveniently; the fixing part 300 replaces the original hardware to achieve the disassembly and assembly connection between the panel 200 and the support frame 100; the fixing part 300 clamps the mounting plate 120 through the clamping plate 320, so that the fixing part 300 can be made of plastic, and the manufacturing cost is significantly lower than the cost of hardware manufacturing, thereby reducing the overall exhaust fan product manufacturing cost.
[0065] Other structures and operations of the exhaust fan according to the embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.
[0066] Reference below Figure 1 and Figure 2 The panel fixing device according to the embodiment of the utility model is described in detail with a specific embodiment. It is worth noting that the following description is only an exemplary description, and is not a specific limitation of the utility model.
[0067] like Figure 1 and Figure 2 As shown, the panel fixing device includes a support frame 100 , a panel 200 , and a fixing member 300 .
[0068] The support frame 100 has a middle through hole 110 and a limiting portion 140. A mounting plate 120 and a mounting plate reinforcing rib 130 are provided on the middle through hole 110. A limiting hole 141 is provided on the limiting portion 140. The support frame 100 is a square frame structure installed on the ceiling. The limiting portions 140 are located at the four corners of the support frame 100. The mounting plate 120 is located on the left and right sides of the middle through hole 110.
[0069] The panel 200 is provided with a panel boss 210, a boss reinforcement rib 220, and a limiting column 230. The boss reinforcement rib 220 is provided with a boss reinforcement rib inclined surface 221. The panel 200 is a square structure. The panel boss 210 is located on the left and right sides of the panel 200.
[0070] The fixing member 300 includes a fixing installation portion 310 and a clamping plate 320. The clamping plate 320 has a clamping protrusion 321, a clamping surface 323, and a clamping plate fixing end 324. The clamping protrusion 321 is provided with a protrusion inclined surface 322. The fixing member 300 is installed on the panel bosses 210 on the left and right sides of the panel 200, and the panel 200 is installed below the support frame 100 through the fixing member 300.
[0071] According to the panel fixing device of the embodiment of the utility model, by such a configuration, at least the following effects can be achieved. When the panel 200 needs to be installed, the clamping opening 340 of the fixing member 300 is aligned with the mounting plate 120 on the support frame 100, and then the panel 200 is moved so that the mounting plate 120 is inserted into the clamping gap 330 from the clamping opening 340, so that the clamping plate 320 clamps the mounting plate 120, so that the installation of the panel 200 is easily completed; by the design that the mounting plate 120 on the support frame 100 cooperates with the fixing member 300 on the panel 200, the panel 200 on the electrical appliance can be more conveniently disassembled and assembled; by replacing the original hardware with the fixing member 300, the panel 200 and the support frame 100 can be disassembled and assembled; the design that the fixing member 300 clamps the mounting plate 120 through the clamping plate 320 allows the fixing member 300 to be made of plastic, and the manufacturing cost is significantly lower than the cost of hardware manufacturing, thereby reducing the overall exhaust fan product manufacturing cost.
[0072] In the description of this specification, the description with reference to the terms "some embodiments" or "it is conceivable that" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0073] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A panel fixing device, characterized in that: include: A support frame (100), the support frame (100) having a middle through hole (110), and a mounting plate (120) is arranged on an inner side wall of the middle through hole (110); A panel (200) located below the support frame (100); A fixing member (300), the fixing member (300) comprising a fixing installation portion (310) and at least two clamping plates (320), the fixing installation portion (310) being connected to the panel (200), a clamping gap (330) and a clamping opening (340) being left between the two corresponding clamping plates (320), so that the clamping gap (330) of the clamping plate (320) can clamp the mounting plate (120), and the panel (200) can be connected to the support frame (100) through the fixing member (300).
2. The panel fixing device according to claim 1, characterized in that: The mounting plate (120) is a flat plate-shaped structure arranged horizontally, and the corresponding two clamping plates (320) are capable of clamping the upper and lower sides of the mounting plate (120).
3. The panel fixing device according to claim 1, characterized in that: A mounting plate reinforcing rib (130) is provided between the mounting plate (120) and the inner side wall of the middle through hole (110).
4. The panel fixing device according to claim 1, characterized in that: There are at least two mounting plates (120) and they are arranged on the left and right sides of the middle through hole (110), and each mounting plate (120) extends toward the inside of the middle through hole (110). There are at least two fixing members (300) and they are arranged on the left and right sides of the panel (200).
5. The panel fixing device according to claim 4, characterized in that: The clamping opening (340) faces the front side or the rear side.
6. The panel fixing device according to claim 1 or 5, characterized in that: The clamping plate (320) is provided with a clamping protrusion (321) at one end of the clamping opening (340); when the clamping gap (330) of the clamping plate (320) clamps the mounting plate (120), the clamping protrusion (321) clamps the mounting plate (120).
7. The panel fixing device according to claim 1, characterized in that: A panel boss (210) is arranged on the upper side of the panel (200), and mounting holes are arranged on the panel boss (210) and the fixed mounting portion (310), and the mounting hole of the panel boss (210) and the mounting hole of the fixed mounting portion (310) are connected by screws.
8. The panel fixing device according to claim 7, characterized in that: A boss reinforcement rib (220) is provided on the boss outer side wall (211) of the panel boss (210), and the boss reinforcement rib (220) is connected to the upper end surface (201) of the panel (200).
9. The panel fixing device according to claim 1, characterized in that: The panel (200) is provided with a limiting column (230), and the support frame (100) has a limiting portion (140); when the panel (200) is connected to the support frame (100), the limiting column (230) presses against the limiting portion (140) so that a ventilation gap (240) is left between the panel (200) and the support frame (100).
10. An exhaust fan, characterized in that: Comprising a panel fixing device according to any one of claims 1 to 9.