Range hood

Abstract

The utility model relates to a range hood equipment technical field discloses an oil fume exhaust fan, which comprises a smoke collecting hood, an opening on the front side of the smoke collecting hood, and a smoke collecting cavity connected with the opening; a front panel arranged on the front side of the smoke collecting hood and rotatably connected with the left and right side walls at the opening to switch between a closed state of partially shielding the opening and an open state of exposing the opening; when the front panel is in the closed state, a suction port is formed between the lower end of the front panel and the cavity bottom of the smoke collecting cavity; a pair of damping supports are respectively fixed on the left and right side walls at the opening and hinged to the front panel through corresponding dampers. The utility model directly connects the dampers between the damping supports and the mounting plate, reduces the intermediate links in the force transmission process, and thus improves the dynamic response speed and transmission stability of the system. Meanwhile, the number of components is reduced, the structure is more compact, the manufacturing cost and assembly difficulty are reduced, and the reliability of the system is improved.

Description

Technical Field

[0001] This utility model relates to the field of range hood equipment technology, and in particular to a range hood. Background Technology

[0002] In existing technologies, dampers are widely used in various mechanical systems to absorb vibrations, regulate motion speed, or provide stable motion feedback. Currently, common dampers typically rely on a rocker arm mechanism as their core transmission component. This type of structure generally consists of a damper (such as a hydraulic damper, magnetorheological damper, or friction damper), connecting rods, and a rocker arm. The rocker arm transmits external forces to the damper, thereby achieving the damping effect.

[0003] However, traditional dampers require multiple components to work together, such as rocker arms, connecting shafts, and supports. This results in a large number of parts and high material consumption, increasing manufacturing costs, assembly difficulty, and maintenance costs. Furthermore, the aforementioned transmission structure is a two-stage transmission structure, with the rocker arm acting as an intermediate transmission element. During force transmission, it experiences certain stroke losses and response delays, affecting the overall system's dynamic response performance. Simultaneously, its transmission stability is poor, making it susceptible to errors and resulting in lower system reliability. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a range hood that effectively solves the problem of multiple damper parts and poor transmission stability in related technologies.

[0005] The above-mentioned technical problems are solved by the following technical solutions:

[0006] A range hood, comprising:

[0007] A smoke hood having an opening on its front side and a smoke collection chamber communicating with the opening;

[0008] The front panel is located on the front side of the smoke collection hood and is rotatably connected to the left and right side walls of the opening, so that the front panel can rotate and switch between a closed state that partially covers the opening and an open state that exposes the opening.

[0009] When the front panel is in the closed state, a smoking opening is formed between the lower end of the front panel and the bottom of the smoke collection chamber;

[0010] A pair of damping brackets are fixed to the left and right sidewalls of the opening, respectively, and are hinged to the front panel through corresponding dampers.

[0011] Compared with the prior art, the range hood described in this utility model has the following beneficial effects:

[0012] Compared to the rocker arm mechanism in related technologies, this application directly connects the front panel and the damping bracket through a damper. This enables a direct force transmission path from the front panel to the side wall of the smoke hood. Specifically, when the front panel is subjected to external force, this force can be quickly transmitted to the main structure of the range hood through the damper, thus forming a primary transmission system. Compared to the traditional two-stage transmission in related technologies, the primary transmission structure of this invention has lower energy loss and faster response speed, resulting in a more stable motion trajectory and effectively improving the overall operational stability and reliability of the system. Furthermore, since this invention eliminates components such as the rocker arm, it reduces the number of parts required for the entire damping system. This not only reduces material costs and manufacturing complexity but also simplifies the assembly process and improves production efficiency. Moreover, the optimization of the above structure allows for a more compact overall layout, which is beneficial for the rational allocation of internal space and modular integration design of the range hood.

[0013] Furthermore, compared to the panels in other locations of the smoke hood, the left and right sidewalls of the smoke hood are relatively small, resulting in stronger resistance to bending and deformation. Therefore, fixing a pair of damping brackets to the left and right sidewalls of the smoke hood provides better support for the front panel and ensures the overall stability of the structure. Secondly, the assembly scheme of fixing a pair of damping brackets to the left and right sidewalls of the smoke hood in this invention can also shorten the distance between the damping brackets and the damper, thus optimizing the force transmission path. This allows external forces to be transmitted to the sidewalls of the smoke hood in a short time, reducing motion errors caused by lag in force transmission and improving the smoothness of the front panel rotation.

[0014] In one embodiment, along the rotation path of the front panel, the damping bracket is provided with a first blocking plate and a second blocking plate. When the front panel and the opening form a maximum opening angle, the first blocking plate abuts against the inner surface of the front panel; when the front panel and the opening form a minimum closing angle, the second blocking plate abuts against the inner surface of the front panel.

[0015] In one embodiment, mounting plates are provided on the left and right sides of the inner surface of the front panel, and ear plates are provided on the side of the mounting plates facing the corresponding damper. The ear plates are hinged to the corresponding damper and the corresponding damping bracket through the corresponding damper.

[0016] In one embodiment, the mounting plate is further provided with a notch, and the ear plate is formed on the mounting plate at the edge of the notch; when the front panel is rotated to the maximum opening angle, the first blocking plate abuts against the inner surface of the front panel through the notch and is arranged parallel to the inner surface of the front panel.

[0017] In one embodiment, a first reinforcing rib is provided at the connection between the mounting plate and the ear plate.

[0018] In one embodiment, the damping bracket includes a first connecting plate, a transition plate, and a second connecting plate that are bent into a Z-shape in sequence. The first connecting plate is attached to and fixedly connected to the side wall of the opening, and the second connecting plate is hinged to the ear plate through the damper. The upper end of the first connecting plate is bent toward the direction of the other damping bracket to form the first blocking plate, and the front end of the second connecting plate is bent toward one side along the left-right direction of the smoke hood to form the second blocking plate.

[0019] In one embodiment, the first connecting plate is connected to the sidewall of the opening by a fastener, and the transition plate is provided with a viewing hole corresponding to the fastener, the viewing hole being used to observe the fastener.

[0020] In one embodiment, a second reinforcing rib is provided at the connection between the first connecting plate and the transition plate, and the second reinforcing rib is offset from the viewing hole.

[0021] In one embodiment, a first buffer layer is provided on the outer surface of the first barrier plate; and / or, a second buffer layer is provided on the outer surface of the second barrier plate.

[0022] In one embodiment, it further includes: a first fastening member and a second fastening member, the first fastening member being integrally integrated into the mounting plate, and the second fastening member being fixed to the side wall of the opening; when the front panel is in the closed state, the first fastening member and the second fastening member are engaged. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is one of the structural schematic diagrams of a range hood according to an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 The diagram shown is the second structural schematic of a range hood;

[0026] Figure 3 for Figure 1 The diagram shown is the third one of the structural schematics of a range hood;

[0027] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0028] Figure 5 for Figure 1 The diagram shows a range hood with the front panel closed.

[0029] Figure 6 This is a schematic diagram of the assembled structure of the damping bracket, damper, mounting plate, and front panel according to an embodiment of the present utility model.

[0030] Figure 7 This is one of the structural schematic diagrams of the damping bracket, damper, and mounting plate after assembly according to an embodiment of the present utility model;

[0031] Figure 8 for Figure 7 The second schematic diagram shows the structure of the damping bracket, damper, and mounting plate after assembly.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Smoke hood; 11. Opening; 12. Smoke collection chamber; 13. Smoke inlet; 2. Front panel; 3. Damping bracket; 31. First baffle plate; 32. Second baffle plate; 33. First connecting plate; 34. Transition plate; 35. Second connecting plate; 36. Visible hole; 37. Second reinforcing rib; 4. Damper; 5. Mounting plate; 51. Ear plate; 52. Notch; 53. First reinforcing rib; 6. First fastener; 7. Second fastener. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] The following description, with reference to the accompanying drawings, illustrates an embodiment of the range hood provided by this utility model.

[0039] like Figures 1 to 8 As shown, the range hood according to an embodiment of the present utility model includes a smoke collection hood 1, a front panel 2, and a damping bracket 3.

[0040] Specifically, the smoke hood 1 has an opening 11 on its front side and a smoke collection chamber 12 connected to the opening 11; the front panel 2 is located on the front side of the smoke hood 1 and is rotatably connected to the left and right side walls at the opening 11, so that the front panel 2 can rotate between a closed state that partially blocks the opening 11 and an open state that exposes the opening 11; when the front panel 2 is in the closed state, a smoke inlet 13 is formed between the lower end of the front panel 2 and the bottom of the smoke collection chamber 12; a pair of damping brackets 3 are respectively fixed on the left and right side walls at the opening 11 and are hinged to the front panel 2 through corresponding dampers 4.

[0041] It should be noted that in this embodiment, the front side of the smoke hood 1 refers to the side of the smoke hood 1 facing the user, the left and right sidewalls at the opening 11 of the smoke hood 1 refer to the panels on opposite sides along the length of the smoke hood 1, and the lower end of the front panel 2 refers to the bottom of the front panel 2 along the height of the smoke hood 1.

[0042] The specific structure of the range hood according to an embodiment of this utility model is described below:

[0043] The fume hood 1 is the main outer shell of the range hood, with a fume collection chamber 12 inside to collect fumes. A smoke inlet 13 is formed between the lower side of the front panel 2 and the bottom of the fume collection chamber 12, guiding the fumes into the fume collection chamber 12. The front panel 2 is a plate-like structure that can rotate relative to the opening 11 of the fume hood 1, typically made of oil-resistant materials such as glass. Furthermore, the front panel 2 cooperates with other plates on the fume hood 1 to create a negative pressure zone at the smoke inlet 13, allowing more fumes to flow into the fume collection chamber 12 through the smoke inlet 13. The damping bracket 3 is a rigid fixing component, typically made of metal or high-strength plastic. A pair of damping brackets 3 are respectively fixed to the left and right inner walls of the opening 11 of the fume collection chamber 12 and hinged to the front panel 2 via a damper 4. It can be understood that the damping bracket 3, as the fixed end of the damper 4, provides a stable support base, thereby ensuring a direct force transmission path and reducing the redundant design of traditional rocker arm mechanisms.

[0044] The damper 4 is a flexible or semi-flexible component connecting the damping bracket 3 and the front panel 2, such as a hydraulic damper 4, a magnetorheological damper 4, or an elastic element. One end of the damper 4 is hinged to the damping bracket 3, and the other end is connected to the front panel 2, thus forming a single-stage transmission structure. In this way, the damper 4 can directly transmit external forces to buffer and limit the rotation of the front panel 2, thereby controlling its stability.

[0045] Based on the above basic structure, the basic working principle of the range hood in this embodiment of the utility model is as follows:

[0046] This utility model provides a range hood, comprising a smoke collection hood 1, a front panel 2, a damping bracket 3, and a damper 4. The smoke collection hood 1 has a smoke collection chamber 12 and an opening 11 communicating with the smoke collection chamber 12. The damping bracket 3 is fixedly mounted on the inner wall of the opening 11, and instead of relying on a traditional rocker arm mechanism as an intermediate transmission component, it is directly hinged to the front panel 2 via the damper 4, thus achieving a primary transmission connection. The front panel 2 is rotatably mounted at the opening 11, allowing for angle adjustment according to user needs.

[0047] Specifically, because the range hood in this embodiment of the invention adopts a single-stage transmission structure, it eliminates traditional multi-stage linkage components, such as rocker arms and connecting shafts, and directly connects the damper 4 between the damping bracket 3 and the front panel 2. This structure reduces intermediate links in the force transmission process, avoids stroke loss and response delay, thereby improving the system's dynamic response speed and transmission stability. At the same time, due to the reduced number of parts, its overall structure is more compact, and it reduces manufacturing costs and assembly difficulty, improving the system's reliability.

[0048] Furthermore, its specific working process is as follows:

[0049] When the user deems the front panel 2 needs cleaning, they apply external force to adjust its opening angle, allowing for cleaning of the interior of the smoke hood 1. Since the damping brackets 3, fixed to the inner walls of the smoke collection chamber 12, are hinged to the front panel 2 via dampers 4, the external force is directly transmitted to the dampers 4 through the front panel 2. At this time, the dampers 4 generate a corresponding damping torque to control the rotational speed and positional changes of the front panel 2, ensuring its stability at any angle. Because there is no intermediate transmission element involved, the force transmission path is shorter, the response is faster, and the motion feedback is more precise. Throughout the rotation, the dampers 4 continuously provide buffering and stabilizing effects, preventing the front panel 2 from undergoing unexpected displacement due to external forces or its own weight, ensuring smooth and controllable operation. Simultaneously, the damping brackets 3 are securely installed on the inner walls of the opening 11 of the smoke collection chamber 12, providing a reliable support foundation for the entire damper 4, further ensuring the stability and safety of the system operation. Once the cleaning is complete, the user will apply a certain amount of force to the front panel 2 to switch it from its current open state back to its initial closed state.

[0050] In summary, the range hood of this utility model embodiment has the following beneficial effects compared with the prior art:

[0051] Compared to the rocker arm mechanism in related technologies, this application directly connects the front panel 2 and the damping bracket 3 via a damper 4. This enables a direct force transmission path from the front panel 2 to the side wall of the smoke hood 1. Specifically, when the front panel 2 is subjected to external force, this force can be quickly transmitted to the main structure of the range hood via the damper 4, thus forming a primary transmission system. Compared to the traditional secondary transmission in related technologies, the primary transmission structure of this embodiment has lower energy loss and faster response speed, resulting in a more stable motion trajectory and effectively improving the overall operational stability and reliability of the system. Furthermore, since this embodiment eliminates components such as the rocker arm, the number of parts required for the entire damping system is reduced. This not only lowers material costs and manufacturing complexity but also simplifies the assembly process and improves production efficiency. Moreover, the optimization of the above structure allows for a more compact overall layout, which is beneficial for the rational allocation of internal space and modular integration design of the range hood.

[0052] Furthermore, compared to the panels at other locations on the smoke hood 1, the left and right sidewalls of the smoke hood 1 are relatively smaller, resulting in stronger resistance to bending and deformation. Therefore, fixing a pair of damping brackets 3 to the left and right sidewalls of the smoke hood 1 respectively provides better support for the front panel 2, ensuring the overall stability of the structure. Secondly, the assembly scheme of fixing a pair of damping brackets 3 to the left and right sidewalls of the smoke hood 1 in this embodiment of the invention can also shorten the distance between the damping brackets 3 and the damper 4, thus optimizing the force transmission path. This allows external forces to be transmitted to the sidewalls of the smoke hood 1 in a short time, reducing motion errors caused by lag in external force transmission and improving the smoothness of the rotation of the front panel 2.

[0053] like Figure 3 and Figure 4 As shown, according to some embodiments of the present invention, along the rotation path of the front panel 2, the damping bracket 3 is provided with a first blocking plate 31 and a second blocking plate 32. When the front panel 2 and the opening 11 form the maximum opening angle, the first blocking plate 31 abuts against the inner surface of the front panel 2; when the front panel 2 and the opening 11 form the minimum closing angle, the second blocking plate 32 abuts against the inner surface of the front panel 2.

[0054] In this embodiment, the first baffle plate 31 is disposed on the damping bracket 3 near the maximum opening angle of the front panel 2, and is used to limit the maximum outward opening position of the front panel 2. The second baffle plate 32 is disposed on the damping bracket 3 near the closed state of the front panel 2, and is used to limit the extreme position when the front panel 2 is fully closed.

[0055] The first blocking plate 31 and the second blocking plate 32 are preferably plate-shaped structures made of metal or high-strength plastic, which can be integrally formed on the damping bracket 3 or fixedly connected by screws, welding or other means. The shape and position of the first blocking plate 31 and the second blocking plate 32 can be adapted to the actual rotation trajectory of the front panel 2 to ensure effective contact and limiting at the corresponding angle.

[0056] In actual use, when the user unfolds the front panel 2 outward to the set maximum angle, the inner surface of the front panel 2 will contact the first baffle plate 31. At this time, the first baffle plate 31 acts as a mechanical stop, preventing the front panel 2 from continuing to rotate, thereby limiting its maximum opening angle and preventing structural interference or inconvenience caused by excessive opening. When the front panel 2 rotates back towards the smoke collection chamber 12 to a fully closed state, the inner surface of the front panel 2 contacts the second baffle plate 32. The second baffle plate 32 acts as a limiter, keeping the front panel 2 flush with the opening 11 in the closed state, thereby preventing displacement or incomplete closure. It should be noted that the inner surface of the front panel 2 mentioned above refers to the side of the front panel 2 closest to the smoke collection chamber 12.

[0057] Thus, this technical solution, by setting a first blocking plate 31 and a second blocking plate 32 on the damping bracket 3, precisely limits the opening and closing angles of the front panel 2 through physical blocking, thereby improving the consistency and controllability of operation and preventing damage to components due to user misoperation. Simultaneously, the blocking function is integrated into the damping bracket 3, eliminating the need for additional limiting structures or sensor elements, thereby reducing the number of parts and assembly complexity, and helping to lower manufacturing costs and maintenance difficulty.

[0058] Furthermore, compared to point or line limiting in related technologies, this embodiment increases the contact area between the first and second blocking plates 31 and the front panel 2 by providing the first blocking plate 31 and the second blocking plate 32 on the damping bracket 3. This not only improves the stability of the limiting but also reduces the possibility of the front panel 2 being damaged by the first blocking plate 31 and the second blocking plate 32.

[0059] Specifically, in related technologies, protrusions, pins, or edge blocks are typically used as limiting structures, and the contact between these structures and the front panel 2 is mostly localized point or line contact. This type of contact leads to stress concentration, which easily causes wear on the inner surface of the front panel 2. Furthermore, if the front panel 2 is made of glass, it is also prone to scratches, abrasions, or even cracks due to friction or impact during opening and closing. In addition, since the contact area between the aforementioned limiting structure and the front panel 2 is small, it means that the limiting stability is poor, which may also cause the front panel 2 to shift at an angle or wobble.

[0060] Based on this, the present invention adopts a surface limiting support method, that is, the first blocking plate 31 and the second blocking plate 32 both have a planar contact surface, which faces the movement path of the front panel 2; when the front panel 2 rotates to the limit position, the inner surface of the front panel 2 contacts the entire planar area of ​​the blocking plate. This contact is a surface contact, rather than a line contact or point contact in the traditional structure.

[0061] In this way, surface contact significantly reduces pressure per unit area, minimizing damage to the surface of the front panel 2. Simultaneously, the front panel 2 receives uniform support during contact, thus preventing deformation or scratches caused by localized stress concentration. Furthermore, for the glass front panel 2, the surface limiting structure effectively prevents scratches caused by hard impacts or friction.

[0062] In some specific embodiments of this utility model, such as Figure 6 As shown, mounting plates 5 are provided on the left and right sides of the front panel 2 near the smoke collection chamber 12. The mounting plate 5 has an ear plate 51 on the side facing the corresponding damper 4. The ear plate 51 is hinged to the corresponding damper 4 and the corresponding damping bracket 3.

[0063] It should be noted that the mounting plate 5 is a rigid connecting plate, typically made of metal or composite materials. The mounting plate 5 is fixed to the front panel 2 and connected to the damper 4 via the ear plate 51. It can be understood that the mounting plate 5 and the ear plate 51 act as intermediaries between the front panel 2 and the damper 4, converting the movement of the front panel 2 into force input to the damper 4, thereby ensuring efficient force transmission. Furthermore, the ear plate 51 has connection holes for connecting to the damper 4. Secondly, the ear plate 51 can be connected to the mounting plate 5 by means of screws, welding, or clips, or it can be integrally formed with the mounting plate 5; this utility model does not specifically limit this method.

[0064] Furthermore, such as Figure 6 and Figure 8 As shown, a first reinforcing rib 53 is provided at the connection between the mounting plate 5 and the ear plate 51.

[0065] In this embodiment, the first reinforcing rib 53 is located at the intersection of the ear plate 51 and the mounting plate 5. It can be made of materials such as metal, and its shape can be triangular, trapezoidal, or other geometric shapes with high bending resistance. This utility model does not impose any special limitations on this. The first reinforcing rib 53 can be integrated with the ear plate 51 and the mounting plate 5 through an integral molding process, or it can be fixedly connected by welding, riveting, or other methods to ensure its structural stability.

[0066] In this way, by setting the first reinforcing rib 53, the rigidity and load-bearing capacity at the connection between the ear plate 51 and the mounting plate 5 can be improved, thereby avoiding deformation or fracture caused by local stress concentration and ensuring the overall structural strength and structural stability.

[0067] In some specific embodiments of this utility model, such as Figures 6 to 8 As shown, the mounting plate 5 is also provided with a notch 52, and the ear plate 51 is formed on the mounting plate 5 at the edge of the notch 52; when the front panel 2 is rotated to the maximum opening angle, the first blocking plate 31 abuts against the inner surface of the front panel 2 through the notch 52 and is arranged parallel to the inner surface of the front panel 2; when the front panel 2 is rotated to the minimum closing angle, the second blocking plate 32 abuts against the inner surface of the front panel 2 or the mounting plate 5 and is arranged parallel to the inner surface of the front panel 2.

[0068] The parallel abutment between the front panel 2 and the first and second blocking plates 31 and 32 allows for precise control of the switch position of the front panel 2, preventing angular deviations. It also increases the contact area between the two, improving the stability of the limit switch. Furthermore, by providing a notch 52 on the mounting plate 5, structural interference is avoided while still fulfilling the limit switch function. Additionally, the molding process of the ear plate 51 on the mounting plate 5 is simplified, reducing manufacturing difficulty.

[0069] In some specific embodiments, the mounting plate 5 is attached to the front panel 2 by means of an adhesive surface. The thickness of the first blocking plate 31 is equal to the thickness of the mounting plate 5 plus the thickness of the adhesive surface. In this way, when the front panel 2 is at its maximum opening angle, the outer surface of the first blocking plate 31 can abut against the inner surface of the front panel 2, thereby playing a supporting and limiting role.

[0070] In some other embodiments, the thickness of the first baffle plate 31 may be greater than or less than the thickness of the mounting plate 5 plus the thickness of the adhesive surface. In this case, by adjusting the height of the first baffle plate 31, the contact limit between the first baffle plate 31 and the front panel 2 can be ensured.

[0071] In some specific embodiments, a first buffer layer is provided on the outer surface of the first blocking plate 31; and / or, a second buffer layer is provided on the outer surface of the second blocking plate 32.

[0072] It is understood that the first buffer layer is used to contact the front panel 2 when it is opened to its limit position and to provide flexible cushioning; the second buffer layer is used to contact the front panel 2 when it is closed to its limit position and to provide flexible cushioning.

[0073] The first buffer layer and the second buffer layer can be made of rubber pads, silicone layers, foam materials, elastic coatings or other flexible materials with buffering and energy absorption properties.

[0074] It should be noted that, in this embodiment, the outer surface of the first blocking plate 31 refers to the side surface of the first blocking plate 31 facing the front panel 2. Similarly, the outer surface of the second blocking plate 32 refers to the side surface of the second blocking plate 32 facing the front panel 2.

[0075] In some specific embodiments, the first buffer layer and the second buffer layer can be fixed to the surfaces of the first baffle plate 31 and the second baffle plate 32 by means of bonding, snapping, or overmolding, thereby ensuring that they are not easily detached during long-term use.

[0076] In this way, the buffer layer can prevent the front panel 2 from being rigidly impacted at the limit position of opening and closing, making the movement process smoother and the user experience better. It can also effectively prevent damage to the surface of the front panel 2. In addition, it can reduce the noise caused by mechanical impact.

[0077] According to some embodiments of this utility model, such as Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, the damping bracket 3 includes a first connecting plate 33, a transition plate 34, and a second connecting plate 35 that are bent into a Z-shape in sequence. The first connecting plate 33 is attached to and fixedly connected to the side wall at the opening 11. The second connecting plate 35 is hinged to the ear plate 51 through the damper 4. The upper end of the first connecting plate 33 is bent toward the direction of the other damping bracket 3 to form a first blocking plate 31. The front end of the second connecting plate 35 is bent to one side along the left and right direction of the smoke hood 1 to form a second blocking plate 32.

[0078] In this embodiment, the first connecting plate 33 is attached to and fixedly connected to the side wall at the opening 11, which improves the connection stability between the damping bracket 3 and the smoke hood 1. It can be understood that the first connecting plate 33 can be connected to the side wall by screws, welding, or clips. Secondly, the reason for fixing the first connecting plate 33 to the side wall in the left-right direction at the opening 11 is that the side wall in the left-right direction is relatively smaller than the other panels of the smoke hood 1, possessing higher bending and torsional strength, thus providing stable support for the damping bracket 3. The transition plate 34 provided between the first connecting plate 33 and the second connecting plate 35 allows the connection point between the second connecting plate 35 and the damper 4 to be away from the inner side wall of the smoke hood 1, thereby avoiding interference between them. Furthermore, the transition plate 34 is set perpendicular to the first connecting plate 33 and the second connecting plate 35, which on the one hand improves the structural strength of the damping bracket 3, and on the other hand allows for a more reasonable force direction for the damper 4 during the rotation of the front panel 2, which is beneficial for improving transmission efficiency and limiting accuracy.

[0079] It should be noted that, in this embodiment, the upper end of the first connecting plate 33 is the upper end of the first connecting plate 33 in the vertical direction of the smoke collection hood 1, and the front end of the second connecting plate 35 in this embodiment is the front end of the second connecting plate 35 in the front-back direction of the smoke collection hood 1.

[0080] Preferably, the front end of the second connecting plate 35 is bent toward the direction of the other damping bracket 3 to form a second blocking plate 32. This arrangement allows the second blocking plate 32 to be away from the side wall of the smoke hood 1, preventing interference between the two. In addition, compared to bending to the other side, the size of the second blocking plate 32 can be made larger, thereby increasing the contact area between the second blocking plate 32 and the front panel 2 and improving the reliability of the limiting mechanism.

[0081] In some specific embodiments, such as Figure 7 and Figure 8 As shown, the first connecting plate 33 is connected to the side wall at the opening 11 by fasteners, and the transition plate 34 is provided with a viewing hole 36 corresponding to the fasteners. The viewing hole 36 is used to observe the fasteners.

[0082] In this embodiment, the first connecting plate 33 is fixedly connected to the inner wall of the smoke collection chamber 12 by fasteners, achieving a stable installation of the entire damping bracket 3. The transition plate 34 is provided with a viewing hole 36 corresponding to the fastener, allowing users or assemblers to directly observe the installation status of the fastener through the viewing hole 36. For example, during assembly, workers can observe through the viewing hole 36 whether the fastener has been correctly inserted into the mounting hole and tightened in place; during use, maintenance personnel can also quickly determine whether the fastener is loose, detached, or corroded through the viewing hole 36 without removing the front panel 2 or the damper 4.

[0083] The visible hole 36 can be circular, elliptical, or polygonal in shape, and its size can be adapted to the shape of fasteners such as bolt heads or nuts, thereby ensuring that visual inspection or auxiliary tool operation of fasteners can be completed directly without disassembling the overall structure.

[0084] Thus, the presence of the viewing hole 36 allows assembly personnel to visually confirm the installation status of fasteners, reducing rework caused by incorrect or missing fasteners and thereby improving production efficiency. Simultaneously, users or after-sales personnel can check for loose fasteners through the viewing hole 36 without disassembling other components, facilitating timely reinforcement and ensuring safe equipment operation.

[0085] In some specific embodiments, such as Figure 8 As shown, a second reinforcing rib 37 is provided at the connection between the first connecting plate 33 and the transition plate 34, and the second reinforcing rib 37 is offset from the viewing hole 36.

[0086] In this embodiment, the second reinforcing rib 37 is disposed at the connection between the first connecting plate 33 and the transition plate 34, and is preferably a geometric shape with high bending resistance, such as a triangle or trapezoid. The second reinforcing rib 37 can be integrally formed with the first connecting plate 33 and the transition plate 34, or it can be fixedly connected by welding, riveting, or other methods to ensure structural stability. It can be understood that the second reinforcing rib 37 can improve the structural strength and deformation resistance of the damping bracket 3.

[0087] For example, the right-angle structure formed between the first connecting plate 33 and the transition plate 34 will be subjected to torque transmitted from the damper 4 during the movement of the front panel 2. Without reinforcing ribs, the connection is prone to bending or breakage due to stress concentration. However, in this embodiment, by providing a second reinforcing rib 37, which fills the angled area between the first connecting plate 33 and the transition plate 34, a locally reinforced structure is formed, thereby significantly improving the rigidity and load-bearing capacity of the connection.

[0088] In this way, the second reinforcing rib 37 enhances the bending and torsional resistance at the connection between the first connecting plate 33 and the transition plate 34, giving the entire damping bracket 3 higher mechanical strength and thus avoiding the deformation or breakage problems at the connection points caused by stress concentration in traditional structures. Furthermore, in this embodiment, the second reinforcing rib 37 is offset from the viewing hole 36, which prevents the viewing hole 36 from damaging the structure of the second reinforcing rib 37 and ensures that the second reinforcing rib 37 effectively fulfills its function.

[0089] According to some embodiments of this utility model, the damper 4 includes a pin, a locking device, and an anti-slip component. The pin passes through the connecting holes on the ear plate 51 and the second connecting plate 35, respectively. The locking device is used to lock the pin onto the ear plate 51 and the second connecting plate 35, and the preload pressure can be adjusted to ensure an appropriate damping effect. The locking device can be adjusted by threads or other locking mechanisms. The anti-slip component is disposed around the pin to provide friction for damping. Specifically, the anti-slip component can be a metal or composite material plate with anti-slip grooves, installed between the ear plate 51 and the second connecting plate 35, thereby increasing resistance during rotation.

[0090] For example, the anti-slip component is an anti-slip plate, and the locking device is a locking sleeve. The pin passes through the connecting hole on the second connecting plate 35, the connecting hole on the ear plate 51, and the connecting hole on the anti-slip plate, thus forming a hinge point. Both ends of the pin can be fixed by the locking sleeve to ensure that it will not easily slip out. The locking sleeve is adjustablely fitted and fixed to the other end of the pin along the extension direction of the pin. The user can adjust the position of the locking sleeve to set the preload pressure, so that the base, the first anti-slip plate, and the rotating bracket have a certain preload force, thereby achieving a rotational damping effect.

[0091] The anti-slip plate is located between the ear plate 51 and the second connecting plate 35, with its two anti-slip surfaces contacting the second connecting plate 35 and the ear plate 51 respectively. Multiple anti-slip grooves are provided on the anti-slip surfaces, spaced apart around the center of the anti-slip surfaces, thereby increasing friction for better damping. An elastic element is also provided between the locking sleeve and the anti-slip plate to press the second connecting plate 35, the anti-slip plate, and the ear plate 51 tightly against the locking sleeve, thereby generating the required damping torque.

[0092] Of course, the above embodiments are only one of the many embodiments of this utility model and do not constitute a specific limitation on the damper 4 of this utility model. The damper 4 can also achieve the damping effect through other structures, and this utility model does not make any special limitations here.

[0093] According to some embodiments of this utility model, such as Figure 2 , Figure 3 and Figure 6As shown, the range hood also includes a first fastening component 6 and a second fastening component 7. The first fastening component 6 is integrally integrated on the mounting plate 5, and the second fastening component 7 is fixed on the side wall of the opening 11. When the front panel 2 is in the closed state, the first fastening component 6 and the second fastening component 7 are engaged.

[0094] In this embodiment, the first fastening element 6 can be in the form of a hook, snap-fit, magnetic device, etc., and is installed on the mounting plate 5 by screws, welding, or other fixing methods. When the front panel 2 is closed, the first fastening element 6 cooperates with the second fastening element 7 to provide locking force, thereby ensuring that the front panel 2 is stably closed and preventing accidental opening.

[0095] The second fastening element 7 can be a hook seat, slot, magnetic plate, etc., that matches the first fastening element 6, and is installed on the inner wall of the smoke collection chamber 12 by screws, welding, or other fixing methods. As a fixed docking point, the second fastening element 7 can cooperate with the first fastening element 6 when the front panel 2 is closed, thereby providing a stable locking effect and enhancing the sealing between the front panel 2 and the smoke collection chamber 12.

[0096] In this way, the cooperation between the first fastener 6 and the second fastener 7 provides a reliable mechanical lock, ensuring that the front panel 2 will not be accidentally opened due to external factors when it is closed, thereby improving the safety of the product and reducing the risk of oil fume leakage caused by the accidental opening of the front panel 2.

[0097] Furthermore, since the first fastening member 6 and the ear plate 51 share a single mounting plate 5, there is no need to set up additional mounting plates 5. This not only reduces the number of parts and saves on processes, but also reduces the difficulty of material management and assembly. Specifically, in related technologies, the first fastening member 6 and the ear plate 51 need to be processed with their own mounting plates 5 separately. Therefore, not only are separate cutting and stamping processes required for the two plates, but they also need to be positioned and fixed separately during assembly, making the process cumbersome and prone to installation errors. In contrast, this application utilizes a modular design approach to integrate the first fastening member 6 and the ear plate 51 onto a single mounting plate 5, which not only simplifies the processing technology but also reduces the number of parts and the complexity of the assembly process. In addition, since the first fastening member 6 and the ear plate 51 share a single mounting plate 5, the number of parts can be reduced, thereby reducing the number of part numbers in the production process and reducing the difficulty of material management.

[0098] For example, the first fastening member 6 is a fastening protrusion mounted on the inner surface of the mounting plate 5. The fastening protrusion includes a large first protrusion at the top and a small second protrusion at the bottom. The second fastening member 7 includes two opposing sliding grooves, which define a fastening gap for the fastening protrusion to enter and exit. Each sliding groove is provided with a return spring and a sliding member, and the two ends of the return spring are fixedly connected to the sliding groove and the sliding member, respectively.

[0099] When the engaging protrusion disengages from the engaging gap, the elastic force of the return spring causes at least a portion of the sliding member to be located within the engaging gap. During the process of the engaging protrusion inserting into the engaging gap, the larger first protrusion passes through the engaging gap first. At this time, the first protrusion pushes the two sliding members so that the first protrusion passes through the engaging gap. After the first protrusion passes through the engaging gap, the smaller second protrusion enters the engaging gap. At this time, the two sliding members are pushed back to their original positions by their respective return springs, thereby clamping the second protrusion between the two sliding members, thus realizing the engagement between the first engaging member 6 and the second engaging member 7.

[0100] Of course, the above embodiments are only one of the many embodiments of this utility model, and do not constitute a specific limitation on the first fastening member 6 and the second fastening member 7 of this utility model. The first fastening member 6 and the second fastening member 7 can also achieve the fastening function through other structures, and this utility model does not make any special limitations here.

[0101] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0102] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A range hood, characterized in that, include: The smoke hood (1) has an opening (11) located on its front side and a smoke collection chamber (12) communicating with the opening (11); The front panel (2) is located on the front side of the smoke hood (1) and is rotatably connected to the left and right side walls at the opening (11) so that the front panel (2) can rotate and switch between a closed state that partially covers the opening (11) and an open state that exposes the opening (11). When the front panel (2) is in the closed state, a smoking port (13) is formed between the lower end of the front panel (2) and the bottom of the smoke collection chamber (12); A pair of damping brackets (3) are fixed on the left and right sidewalls of the opening (11) respectively, and are hinged to the front panel (2) through corresponding dampers (4).

2. The range hood according to claim 1, characterized in that, Along the rotation path of the front panel (2), the damping bracket (3) is provided with a first blocking plate (31) and a second blocking plate (32). When the front panel (2) and the opening (11) form the maximum opening angle, the first blocking plate (31) abuts against the inner surface of the front panel (2); when the front panel (2) and the opening (11) form the minimum closing angle, the second blocking plate (32) abuts against the inner surface of the front panel (2).

3. The range hood according to claim 2, characterized in that, Mounting plates (5) are provided on the left and right sides of the inner surface of the front panel (2). The mounting plate (5) has an ear plate (51) on the side facing the corresponding damper (4). The ear plate (51) is hinged to the corresponding damper bracket (3) through the corresponding damper (4).

4. The range hood according to claim 3, characterized in that, The mounting plate (5) is also provided with a notch (52), and the ear plate (51) is formed at the edge of the mounting plate (5) located at the notch (52); when the front panel (2) is rotated to the maximum opening angle, the first blocking plate (31) abuts against the inner surface of the front panel (2) through the notch (52) and is arranged parallel to the inner surface of the front panel (2).

5. The range hood according to claim 3, characterized in that, The mounting plate (5) and the ear plate (51) are provided with a first reinforcing rib (53).

6. The range hood according to claim 3, characterized in that, The damping bracket (3) includes a first connecting plate (33), a transition plate (34), and a second connecting plate (35) that are bent into a Z-shape in sequence. The first connecting plate (33) is attached to and fixedly connected to the side wall at the opening (11). The second connecting plate (35) is hinged to the ear plate (51) through the damper (4). The upper end of the first connecting plate (33) is bent toward the direction of the other damping bracket (3) to form the first blocking plate (31). The front end of the second connecting plate (35) is bent to one side along the left and right direction of the smoke hood (1) to form the second blocking plate (32).

7. The range hood according to claim 6, characterized in that, The first connecting plate (33) is connected to the side wall of the opening (11) by fasteners. The transition plate (34) is provided with a viewing hole (36) corresponding to the fasteners. The viewing hole (36) is used to observe the fasteners.

8. The range hood according to claim 7, characterized in that, A second reinforcing rib (37) is provided at the connection between the first connecting plate (33) and the transition plate (34), and the second reinforcing rib (37) is offset from the viewing hole (36).

9. The range hood according to any one of claims 2 to 7, characterized in that, The outer surface of the first blocking plate (31) is provided with a first buffer layer; and / or, the outer surface of the second blocking plate (32) is provided with a second buffer layer.

10. The range hood according to any one of claims 3 to 7, characterized in that, Also includes: The first fastener (6) and the second fastener (7) are integrally integrated on the mounting plate (5) and the second fastener (7) is fixed on the side wall of the opening (11). When the front panel (2) is closed, the first fastener (6) and the second fastener (7) engage with each other.

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