Smoke collecting hood of range hood and range hood

Abstract

The utility model relates to the technical field of kitchen appliances, and discloses an exhaust fume collecting hood of a range hood, which is provided with an exhaust fume suction port and an exhaust fume collecting cavity, and comprises an exhaust fume collecting hood shell, an exhaust fume collecting hood cover and an exhaust fume collecting hood cover, the opening and closing plate is used for opening or closing the smoke suction port; the opening and closing mechanism comprises a mounting frame and a first connecting rod, the first connecting rod is connected to the mounting frame and the opening and closing plate, the mounting frame is mounted on the lower surface of the top plate and adjacent to the side plate, and a reinforcing structure is arranged between the mounting frame and the side plate. According to the utility model, the opening and closing mechanism is fixed on the top plate, so that the appearance of the product is ensured, the opening and closing mechanism is convenient to install and fix, and the reinforcing structure is arranged near the top plate, so that the reinforcing structure can support and reinforce the top plate, and the bearing capacity of the top plate is improved; the deformation of the top plate caused by the long-term weight effect of the opening and closing mechanism is avoided, and the overall structural strength of the exhaust fume collecting hood and the movement stability of the opening and closing mechanism are guaranteed.

Description

Technical Field

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

[0002] The opening and closing mechanism on existing range hoods is usually used to drive the opening and closing plate to control the opening and closing of the smoke inlet. Since the opening and closing plate is generally heavy, the opening and closing mechanism needs to support a large weight. Moreover, existing range hoods usually simply fix the opening and closing mechanism directly to the panel of the smoke collection hood without any other auxiliary structures. Therefore, under the gravity driven by the opening and closing mechanism, the panel of the smoke collection hood will be pulled and deformed or damaged locally, which may cause the smoke collection hood to deform as a whole. Furthermore, the structural stability of the entire smoke collection hood is also poor, and it cannot stably support the opening and closing mechanism for a long time. Utility Model Content

[0003] The first technical problem solved by this utility model is to provide a smoke collection hood for a range hood, which effectively solves the problem of poor structural stability of smoke collection hoods in related technologies.

[0004] The second technical problem solved by this utility model is to provide a range hood that effectively solves the problem that the structure of a range hood is prone to deformation due to excessive load in related technologies.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A range hood's smoke collection hood, comprising an interconnected smoke inlet and a smoke collection chamber, including:

[0007] The smoke hood housing includes a top plate and two side plates, with the two side plates respectively installed on the left and right sides of the top plate;

[0008] A hinged plate is used to open or close the smoking port;

[0009] The opening and closing mechanism includes a mounting frame and a first connecting rod, the first connecting rod being connected to the mounting frame and the opening and closing plate; the mounting frame is mounted on the lower surface of the top plate and disposed adjacent to the side plate, and a reinforcing structure is provided between the mounting frame and the side plate.

[0010] Compared with the prior art, the smoke collection hood of the range hood described in this utility model has the following advantages: This solution hides screws and other fixing structures by fixing the opening and closing mechanism to the top plate, thus avoiding affecting the product's appearance. While ensuring the product's aesthetics, it also facilitates the installation and fixing of the opening and closing mechanism, avoiding the appearance defects and more difficult installation and fixing problems that occur when the mechanism is installed on the side plate in related technologies. Furthermore, this solution sets a reinforcing structure near the top plate, which can support and strengthen the top plate, thereby improving the load-bearing capacity of the top plate and preventing deformation of the top plate due to the long-term gravity of the opening and closing mechanism. This ensures the overall structural strength of the smoke collection hood and the movement stability of the opening and closing mechanism.

[0011] In one embodiment, the reinforcing structure includes a first reinforcing member disposed on the top plate and a second reinforcing member disposed on the side plate, the first reinforcing member and the second reinforcing member being fixedly connected by fasteners.

[0012] In one embodiment, the first reinforcing member is a first flange, and the side edge of the top plate facing the side plate extends downward to form the first flange; the second reinforcing member is a second flange, and the upper edge of the side plate is folded towards the direction of the top plate to form a horizontal flange, and the horizontal flange extends downward to form the second flange.

[0013] Both the first flange and the second flange extend along the front-back direction, and the first flange and the second flange are attached together and fixedly connected by fasteners.

[0014] In one embodiment, the mounting bracket includes a mounting top plate fixed to the lower surface of the top plate, the mounting top plate extending in a front-rear direction and having a downwardly extending mounting side wall on one side edge facing the side plate, the first connecting rod being connected to the mounting side wall.

[0015] In one embodiment, the mounting top plate has a downwardly extending reinforcing flange on the side edge away from the side plate, the reinforcing flange extending in the front-rear direction.

[0016] In one embodiment, the reinforcing structure includes at least one reinforcing side beam disposed on the lower surface of the top plate, the reinforcing side beam extending in a front-rear direction.

[0017] In one embodiment, the opening and closing mechanism is divided into two sets, namely an active opening and closing mechanism and a passive opening and closing mechanism. Both the active opening and closing mechanism and the passive opening and closing mechanism are installed on the lower surface of the top plate and are located at both ends of the top plate in the left-right direction.

[0018] The number of reinforcing structures is two sets, and the two sets of reinforcing structures are respectively located at both ends of the top plate in the left-right direction. In one embodiment, the smoke hood housing also includes a lamp panel disposed below the top plate, and lighting fixtures are mounted on the lamp panel;

[0019] One end of the first connecting rod is hinged to the mounting bracket and the other end is fixedly connected to the opening and closing plate. The first connecting rod is provided with a clearance groove for avoiding the lamp panel.

[0020] In one embodiment, the active opening and closing mechanism further includes a drive motor, a second link, and a third link. The second link is hinged to the mounting frame and is drively connected to the drive end of the drive motor. The two ends of the third link are respectively hinged to the second link and the first link.

[0021] The mounting bracket is provided with a first limiting member and a second limiting member along the rotation path of the second connecting rod; the first limiting member is used to limit the opening position of the opening and closing plate, and the second limiting member is used to limit the closing position of the opening and closing plate.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] A range hood, comprising:

[0024] The smoke collection hood and air box of the range hood as described in the first aspect of this utility model;

[0025] The bellows is fixed to the smoke hood and is in communication with the smoke hood.

[0026] Compared with the prior art, the range hood described in this utility model has the following advantages: This solution hides screws and other fixing structures by fixing the opening and closing mechanism to the top plate, thus avoiding affecting the product's appearance. While ensuring the product's aesthetics, it also facilitates the installation and fixing of the opening and closing mechanism, avoiding the appearance defects and more difficult installation and fixing problems that occur when the mechanism is installed on the side plate in related technologies. Furthermore, by strengthening the structure, this utility model distributes the load of the opening and closing mechanism from the top plate to the side plate, solving the deformation problem caused by top plate overload in traditional range hoods, while improving the stability and long-term reliability of the opening and closing movement. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the structure of a range hood according to an embodiment of the present invention with the opening and closing plate in the open position;

[0029] Figure 2 This is one of the structural schematic diagrams of a range hood according to an embodiment of the present invention with the opening and closing plate in the closed position;

[0030] Figure 3 This is a left view of a range hood according to an embodiment of the present invention with the opening and closing plate in the open position;

[0031] Figure 4 This is a partial structural diagram of a range hood according to an embodiment of the present utility model;

[0032] Figure 5 This is a partial structural side view of a range hood according to an embodiment of the present utility model;

[0033] Figure 6 This is one of the structural schematic diagrams of the side plate of the smoke collection hood according to an embodiment of the present utility model;

[0034] Figure 7 This is a second schematic diagram of the structure of the side panel of the smoke collection hood according to an embodiment of the present utility model;

[0035] Figure 8 This is a schematic diagram of the opening and closing mechanism of the smoke collection hood in the open position according to an embodiment of the present utility model;

[0036] Figure 9 This is a schematic diagram of the opening and closing mechanism of the smoke collection hood in the closed position according to an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Smoke hood housing; 101. Smoke inlet; 102. Smoke collection chamber; 11. Top plate; 111. First top plate; 112. Second top plate; 113. Reinforcing structure; 114. First flange; 12. Side plate; 121. Horizontal flange; 122. Second flange; 13. Lamp panel;

[0039] 2. Mounting bracket; 21. Mounting top plate; 22. Mounting side wall; 23. Reinforced flange; 31. First connecting rod; 311. Clearance groove; 32. Second connecting rod; 33. Third connecting rod; 34. First limiting component; 35. Second limiting component; 4. Opening and closing plate; 5. Drive motor; 6. Lighting fixture; 7. Air box. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] The following description, with reference to the accompanying drawings, illustrates a smoke collection hood for a range hood and a range hood incorporating the smoke collection hood, according to this utility model.

[0045] like Figures 1 to 9 As shown, the range hood according to the first aspect of the present invention has a smoke inlet 101 and a smoke collection chamber 102 that are interconnected. The smoke hood includes a smoke hood housing 1 and an opening and closing mechanism.

[0046] The smoke hood housing 1 includes a top plate 11 and side plates 12 respectively installed on both sides of the top plate 11 in the left-right direction. The smoke hood housing 1 also includes an opening and closing plate 4 for opening or closing the smoke inlet 101. The opening and closing mechanism includes a mounting frame 2 and a first connecting rod 31. The first connecting rod 31 is connected to the mounting frame 2 and the opening and closing plate 4 in a transmission connection. The mounting frame 2 is installed on the lower surface of the top plate 11 and is disposed adjacent to the side plates 12. A reinforcing structure 113 is provided between the mounting frame 2 and the side plates 12.

[0047] The specific structure of the smoke collection hood of the range hood according to an embodiment of this utility model is described below:

[0048] The smoke hood housing 1 includes a top plate 11 and two side plates 12. The top plate 11 serves as the top support structure of the smoke hood, bearing part of the weight of the opening and closing plate 4 and the opening and closing mechanism. The side plates 12 are installed on both sides of the top plate 11 in the left-right direction, forming the side walls of the smoke collection chamber 102, and together with the top plate 11, they constitute the main frame of the smoke hood. The smoke collection chamber 102 is formed below the top plate 11, and the smoke inlet 101 is located at the front end of the smoke hood and communicates with the smoke collection chamber 102 for collecting oil fumes.

[0049] The mounting bracket 2 of the opening and closing mechanism is fixed to the lower surface of the top plate 11, adjacent to the side plate 12, and is used to support the drive structure such as the first connecting rod 31. It can be understood that the drive structure includes at least the first connecting rod 31. In addition, the drive structure may also include other connecting rods and motors, such as the second connecting rod 32, the third connecting rod 33, and the drive motor 5, or one or more of them. The mounting bracket 2 provides a mounting base for the connection of the drive structure, and the reinforcing structure 113 between it and the side plate 12 ensures the stability of the mounting bracket 2 under load. The two ends of the first connecting rod 31 are connected to the mounting bracket 2 and the opening and closing plate 4, respectively. In this way, when the first connecting rod 31 swings, it will also drive the opening and closing plate 4 to open and close. The swing of the first connecting rod 31 can be driven by the drive motor 5 or manually controlled by human power. This utility model does not impose any special limitations here. The opening and closing plate 4 is linked with the mounting bracket 2 through the first connecting rod 31 and can open and close to cover the smoke inlet 101, thereby controlling the intake and sealing of oil fumes.

[0050] The reinforcing structure 113 is disposed between the mounting frame 2 and the side plate 12 and is fixed by means of integral molding, welding, snap-fit ​​or bolts. The main function of the reinforcing structure 113 is to distribute the load of the mounting frame 2 to the side plate 12 and enhance the local rigidity of the top plate 11. The load of the mounting frame 2 typically includes the weight and motion inertia of the driving structure such as the opening and closing plate 4 and the first connecting rod 31.

[0051] It should be explained that the core function of the reinforcing structure 113 is to transfer the vertical and horizontal loads borne by the mounting bracket 2 to the side plate 12, preventing the top plate 11 from deforming due to excessive local stress. Simultaneously, the reinforcing structure 113 can also improve the connection rigidity between the top plate 11 and the side plate 12 through material selection or structural design. For example, the reinforcing structure 113 can use metal reinforcing ribs, or it can be designed as a triangular support structure. It should be noted that this utility model does not impose special restrictions on the specific structure and material of the reinforcing structure 113, as long as it achieves the structural reinforcement effect.

[0052] Based on the above structure, the specific design principle of the smoke hood of this utility model is introduced as follows: This utility model achieves coordinated force sharing between the top plate 11 and the side plates 12 through the reinforcing structure 113, solving the problem of deformation of the top plate 11 caused by the long-term weight of the opening and closing mechanism in traditional range hoods. Specifically, for ease of installation and aesthetics, the mounting frame 2 of the opening and closing mechanism is designed on the top plate 11, and the weight of the opening and closing mechanism will directly act on the top plate 11, which is prone to causing the top plate 11 to deflect and deform. Therefore, this aspect improves the structure of the smoke hood by distributing the load from the mounting frame 2 to the two side plates 12 through the reinforcing structure 113, forming a multi-point support structure of "top plate 11 - reinforcing structure 113 - side plates 12", so that the force on the top plate 11 is evenly distributed. At the same time, when the opening and closing plate 4 moves, the inertial force generated by the first connecting rod 31 and other driving structures is transmitted to the reinforcing structure 113 through the mounting frame 2, and the rigid support of the side plates 12 can also effectively suppress the vibration or displacement of the top plate 11. Furthermore, the enhanced rigidity design of structure 113 can also prevent local stress concentration at the connection between the top plate 11 and the side plate 12, thus avoiding structural loosening after long-term use.

[0053] Furthermore, the working process of the smoke hood of this utility model is as follows: Taking the drive structure, which also includes a drive motor 5, as an example, when the opening and closing plate 4 covers the smoke inlet 101, the reinforcing structure 113 is in a static load state, and the top plate 11 and the side plate 12 form a rigid support through the reinforcing member, with no obvious deformation of the top plate 11. The drive motor 5 drives the opening and closing plate 4 to move upward and / or outward through the first connecting rod 31. At this time, the mounting bracket 2 bears the weight of the opening and closing plate 4 and the tension of the first connecting rod 31. At this time, the reinforcing structure 113 immediately distributes the load and transfers it to the side plate 12, and the top plate 11 only bears the distributed local pressure, avoiding bending or sinking due to concentrated force.

[0054] It is understandable that during the opening of the hinged plate 4, the inertial force of the driving structure such as the first connecting rod 31 can be transmitted through the mounting frame 2, the reinforcing structure 113 to the side plate 12, and the rigid frame of the side plate 12 effectively absorbs vibration, thereby ensuring the smooth movement of the hinged plate 4. During the closing process of the hinged plate 4, the reinforcing structure 113 continues to distribute the load of the top plate 11, ensuring that the top plate 11 is stably stressed and does not deform when closed.

[0055] In summary, this solution hides screws and other fixing structures by fixing the opening and closing mechanism to the top plate 11, thus avoiding affecting the product's appearance. While ensuring the product's aesthetics, it also facilitates the installation and fixing of the opening and closing mechanism, avoiding the appearance defects and more difficult installation and fixing problems that occur when the mechanism is installed on the side plate in related technologies. Furthermore, by strengthening the structure 113, this utility model distributes the load of the opening and closing mechanism from the top plate 11 to the side plate 12, solving the deformation problem caused by overload of the top plate 11 in traditional range hoods, while improving the stability and long-term reliability of the opening and closing movement.

[0056] like Figure 4 As shown, according to some embodiments of the present invention, the reinforcing structure 113 includes a first reinforcing member disposed on the top plate 11 and a second reinforcing member disposed on the side plate 12, and the first reinforcing member and the second reinforcing member are fixedly connected by fasteners.

[0057] In this embodiment, the first reinforcing member is installed on the lower surface or edge area of ​​the top plate 11, and is typically a longitudinal or longitudinally extending support structure, such as a metal flange, reinforcing rib, steel plate, or composite material plate. The first reinforcing member can directly enhance the local stiffness of the top plate 11, offset the vertical and horizontal loads applied by the opening and closing mechanism, and prevent the top plate 11 from deflecting or deforming due to concentrated force.

[0058] The second reinforcing member is fixed to the inner or outer surface of the side plate 12, and is typically a longitudinal reinforcing structure aligned with the length of the side plate 12, such as a flange, reinforcing rib, or welded stiffening plate. Through its rigid connection with the side plate 12, the second reinforcing member distributes the load transmitted from the top plate 11 to the support frame of the side plate 12, improving the bending resistance of the side plate 12 and preventing lateral deformation. During assembly, the first and second reinforcing members can be fixed together using high-strength bolts, rivets, or welding.

[0059] It is understandable that the fixed first and second reinforcing members form a bridging structure between the top plate 11 and the side plate 12, allowing the load of the top plate 11 to be transferred to the side plate 12 through the fasteners, thus preventing the top plate 11 from bearing concentrated stress alone. Specifically, the first reinforcing member distributes the load of the top plate 11 to the fastener connection nodes, while the fasteners transfer the load to the second reinforcing member, and finally distribute it evenly to the entire smoke hood through the frame structure of the side plate 12, forming a cooperative force-bearing path from the top plate 11 and the fasteners to the side plate 12.

[0060] In summary, the above structure, through the synergistic effect of the first and second reinforcing members, improves the bending strength of the top plate 11 and enhances the lateral deformation resistance of the side plate 12, thereby extending the overall structural lifespan. Simultaneously, the load of the opening and closing mechanism can be distributed to the side plate 12 through the fastener connection nodes, significantly reducing the local stress in the top plate 11 and thus preventing permanent deformation.

[0061] like Figure 4 and Figure 5 As shown, in some specific embodiments, the first reinforcing member is a first flange 114, which is formed by extending downward from one side edge of the top plate 11 toward the side plate 12; the second reinforcing member is a second flange 122, which is formed by folding the upper edge of the side plate 12 toward the direction of the top plate 11 to form a horizontal flange 121, and the horizontal flange 121 extends downward to form the second flange 122.

[0062] The first flange 114 and the second flange 122 both extend in the front-to-back direction, and the first flange 114 and the second flange 122 are attached together and fixedly connected by fasteners.

[0063] The side edge of the top plate 11 extends downward to form a first flange 114, which extends continuously in the front-to-back direction. The first flange 114 forms an L-shaped structure perpendicular to the surface of the top plate 11, extends downward, and is parallel to and abuts against the second flange 122 of the side plate 12. It can be understood that the first flange 114 is used to provide a mating surface with the second flange 122, and the top plate 11 and the side plate 12 are rigidly connected by fasteners to enhance the overall structural strength.

[0064] The horizontal flange 121 is formed by folding the side plate 12 upwards towards the top plate 11, and is parallel to the horizontal plane of the top plate 11. Its function is to provide a supporting base for the second flange 122. The second flange 122 is formed by extending downwards from the end of the horizontal flange 121, and extends continuously in the front-to-back direction. The second flange 122 is attached to the outer surface of the first flange 114 and fixed by fasteners, thereby forming a rigid connection node.

[0065] The left and right lengths of the horizontal flange 121 can be adjusted according to the position of the mounting bracket 2 to ensure the distance between it and the mounting bracket 2, and to avoid affecting its effect due to the distance being too far or too close.

[0066] Furthermore, the mating surfaces of the first flange 114 and the second flange 122 can be fixed using fasteners such as high-strength bolts, rivets, or welding. For example, the fasteners can be evenly distributed along the length of the flanges to ensure the shear and tensile strength of the connection joint and avoid local deformation caused by stress concentration.

[0067] It is understandable that the above structure can optimize the load transfer path. For example, during use, the load of the top plate 11 can be transferred to the second flange 122 through the first flange 114, and the second flange 122 distributes the load along the longitudinal frame of the side plate 12 to the entire smoke hood, avoiding localized stress concentration at the edge of the top plate 11. The contact surfaces of the first flange 114 and the second flange 122 can provide a wide contact area, dispersing the vertical load and lateral force of the top plate 11. Furthermore, the vertical extension of the first flange 114 can enhance the bending stiffness of the top plate 11 and suppress edge sagging. Simultaneously, the longitudinal support of the second flange 122 can constrain the lateral displacement of the side plate 12, preventing twisting at the connection between the top plate 11 and the side plate 12.

[0068] As described above, this utility model achieves coordinated force distribution between the top plate 11 and the side plate 12 by attaching and fixing the first flange 114 of the top plate 11 to the second flange 122 of the side plate 12, thereby avoiding deformation, leakage and vibration problems caused by force concentration at the edge of the top plate 11, while ensuring sealing and vibration resistance.

[0069] like Figure 4 and Figure 8 As shown, according to some embodiments of the present invention, the mounting bracket 2 includes a mounting top plate 21 fixed to the lower surface of the top plate 11. The mounting top plate 21 extends in the front-back direction. The mounting top plate 21 also has a downwardly extending mounting side wall 22 on one side edge facing the side plate 12. The mounting side wall 22 extends in the front-back direction. The first connecting rod 31 is connected to the mounting side wall 22.

[0070] In this embodiment, the mounting top plate 21 is fixed to the lower surface of the top plate 11 and extends along the width direction of the top plate 11 to form a longitudinal support platform. The mounting side wall 22 is located at the side edge of the mounting top plate 21 and extends vertically downward in the front-rear direction. The first connecting rod 31 is mounted on the mounting side wall 22, and its motion inertia force and weight are transmitted to the top plate 11 through the mounting side wall 22.

[0071] It is understandable that although the mounting sidewall 22 is not directly physically connected to the first stiffener, load transfer can be achieved through proximity and structural parallelism. Therefore, the mounting sidewall 22 not only provides a vertical mounting interface for the first connecting rod 31, but also transfers the load to the first stiffener through the adjacent structure. Correspondingly, the first stiffener can enhance the local stiffness of the top plate 11 and disperse stress by bearing the load transferred by the adjacent mounting sidewall 22.

[0072] Specifically, through the stress analysis of the above structure, it can be seen that the mounting sidewall 22, through its arrangement adjacent to the first reinforcing member, can indirectly transfer the load to the reinforced area of ​​the top plate 11, avoiding local stress concentration on the top plate 11. The first reinforcing member, through its parallel and adjacent structural design, restricts the deformation of the top plate 11, and its stiffness can suppress the bending deformation of the top plate 11 caused by the load of the mounting sidewall 22. The mounting sidewall 22 and the first reinforcing member work together to indirectly distribute the load to the first reinforcing member through the rigid structure of the top plate 11. Thus, the mounting top plate 21 and the top plate 11 together form a support platform for supporting the opening and closing mechanism. At this time, the load of the mounting sidewall 22 is transferred to the entire top plate 11 through the mounting top plate 21, and then distributed to the side plate 12 through the first reinforcing member.

[0073] In summary, by installing the side wall 22 and the first reinforcing member in a parallel and adjacent arrangement, this utility model achieves indirect load transfer and distribution, thereby further improving the structural stability and strengthening of the smoke hood.

[0074] like Figure 4 and Figure 8 As shown, further, a reinforcing flange 23 extending downward is provided on the side edge of the top plate 21 away from the side plate 12, and the reinforcing flange 23 extends in the front-back direction.

[0075] It is understood that in this embodiment, the mounting frame 2 is composed of a mounting top plate 21, mounting side walls 22, and reinforcing flanges 23, thereby forming a U-shaped frame structure with a closed upper end. The mounting top plate 21 connects the two ends of the reinforcing flanges 23 and the mounting side walls 22. The mounting side walls 22 are located on one side edge of the mounting top plate 21, extending vertically downwards and parallel to the first reinforcing member. The reinforcing flanges 23 are located on the other side edge of the mounting top plate 21, extending vertically downwards and symmetrically distributed with the mounting side walls 22, forming a U-shaped closed structure.

[0076] In this way, the closed cross-section of the U-shaped structure distributes the load evenly along the width direction, avoiding localized stress concentration on the top plate 11. At the same time, the closed cross-section of the U-shape can significantly improve the bending stiffness and torsional resistance of the structure, preventing the mounting frame 2 from bending or twisting due to excessive load.

[0077] like Figure 4 As shown, there are two sets of opening and closing mechanisms, namely an active opening and closing mechanism and a passive opening and closing mechanism. Both the active and passive opening and closing mechanisms are installed on the lower surface of the top plate 11 and are located at both ends of the top plate 11 in the left and right directions, respectively. There are two sets of reinforcing structures 113, which are located at both ends of the top plate 11 in the left and right directions, respectively.

[0078] Furthermore, the smoke hood housing 1 has a split structure. The top plate 11 includes a first top plate 111 and a second top plate 112 spaced apart, and the side plate 12 includes a first side plate 12 and a second side plate 12. The mounting brackets 2 in the active opening and closing mechanism and the passive opening and closing mechanism are respectively installed on the lower surface of the first top plate 111 and the lower surface of the second top plate 112.

[0079] There are two sets of reinforcing structures 113, one set of which is located between the first side plate 12 and the corresponding mounting bracket 2, and the other set of which is located between the second side plate 12 and the corresponding mounting bracket 2.

[0080] Thus, this embodiment, through a split structural design, divides the top plate 11, side plate 12, and opening / closing mechanism of the smoke hood into two independent modules. Furthermore, through the synergy of the regional reinforcing members and the side plate 12, the bending resistance of the smoke hood is greatly improved. At the same time, the above-mentioned modular design can significantly reduce maintenance costs and improve the smoke hood's resistance to local overload.

[0081] like Figure 4 As shown, according to some embodiments of the present invention, the smoke hood housing 1 also includes a lamp panel 13 disposed below the top plate 11, and a lighting fixture 6 is installed on the lamp panel 13.

[0082] One end of the first connecting rod 31 is hinged to the mounting bracket 2 and the other end is fixedly connected to the opening and closing plate 4. The first connecting rod 31 is provided with a clearance groove 311 for avoiding the light panel 13.

[0083] The drive end of the drive motor 5 is connected to the first link 31 to drive the opening and closing plate 4 to switch between the open and closed positions.

[0084] In the open position, the opening and closing plate 4 opens the smoke inlet 101, and there is a gap between the upper edge of the opening and closing plate 4 and the lamp panel 13. The lamp panel 13 extends into the relief groove 311 to prevent the lamp panel 13 from interfering with the opening and closing mechanism. In the closed position, the opening and closing plate 4 closes the smoke inlet, and the upper edge of the opening and closing plate 4 is in contact with the lamp panel 13.

[0085] In this embodiment, the lamp panel 13 is fixed below the top plate 11, forming the front boundary of the fume hood, and a lighting fixture 6 is installed on it. On the one hand, the lamp panel 13 can provide lighting for the cooking area through the lighting fixture; on the other hand, the inclined or guiding structure of the lamp panel 13 can also guide the fumes to concentrate towards the fume extraction port 101.

[0086] One end of the first connecting rod 31 is hinged to the mounting bracket 2, and the other end is fixedly connected to the opening and closing plate 4. A clearance groove 311 is provided on the first connecting rod 31 to accommodate the relative displacement of the lamp panel 13 when the opening and closing plate 4 moves. When the first connecting rod 31 swings, it can push the opening and closing plate 4 to switch between the open and closed positions.

[0087] For example, in the open position, the hinged plate 4 is fully extended, and the smoke inlet 101 is fully exposed, allowing fumes to enter the fume hood. At this time, the lamp panel 13 is embedded in the clearance groove 311, preventing collision between the two and reducing fume leakage during movement. As another example, in the closed position, the hinged plate 4 is fully closed, sealing against the lamp panel 13 to prevent fumes from overflowing. In this case, the contact area can use a sealing structure such as a silicone gasket to enhance the seal.

[0088] Thus, through the improved design of the opening and closing mechanism in this embodiment, on the one hand, the opening and closing plate 4 can avoid the lamp panel 13 on which the lighting fixture 6 is installed during the movement and does not interfere with other components; on the other hand, the opening and closing plate 4 can effectively seal the smoke inlet 101 at the extreme closed position without colliding with other structures.

[0089] like Figure 4 , Figure 8 and Figure 9 As shown, the active opening and closing mechanism further includes a drive motor 5, a second link 32 and a third link 33. The second link 32 is hinged to the mounting frame 2 and is connected to the drive end of the drive motor 5. The two ends of the third link 33 are respectively hinged to the second link 32 and the first link 31.

[0090] The mounting bracket 2 is provided with a first limiting member 34 and a second limiting member 35 along the rotation path of the second connecting rod 32. The first limiting member 34 is used to limit the opening position of the opening and closing plate 4, and the second limiting member 35 is used to limit the closing position of the opening and closing plate 4.

[0091] In this embodiment, the first link 31, the second link 32, and the third link 33 within the active opening and closing mechanism form a three-bar linkage system. One end of the second link 32 is hinged to the mounting bracket 2 and simultaneously connected to the drive end of the drive motor 5 via a coupling or gear. The other end of the second link 32 is hinged to the third link 33. It can be understood that the second link 32 is the active arm for power transmission, converting the rotational motion of the motor into oscillating motion.

[0092] The two ends of the third link 33 are hinged to the second link 32 and the first link 31, respectively. The third link 33 is a transmission arm that transmits the movement of the second link 32 to the first link 31. One end of the first link 31 is hinged to the mounting bracket 2, and the other end is fixedly connected to the opening and closing plate 4, and has a clearance groove 311. The first link 31 is an actuator that directly drives the opening and closing movement of the opening and closing plate 4.

[0093] It can be understood that the three links form a triangular closed structure, and motion is transmitted through the linkage of the hinge points. For example, the transmission path of the driving force of the drive motor 5 is as follows: from the second link 32, the third link 33, the first link 31 to the opening and closing plate 4. That is, the rotational motion of the drive motor 5 drives the swing of the second link 32, which in turn drives the swing of the third link 33, which in turn drives the swing of the first link 31, and finally realizes the opening and closing of the opening and closing plate 4.

[0094] The first limiting member 34 is fixed to the mounting bracket 2 and located at the end of the rotation path of the second connecting rod 32, that is, the position when the opening and closing plate 4 is fully open. The first limiting member 34 can be in the form of a mechanical stop, such as a metal block or a rubber pad, etc. The first limiting member 34 can prevent the first connecting rod 31 from swinging excessively through physical contact. A sensor can be installed on the first limiting member 34 so that when the connecting rod is detected to be close to its limit position, the sensor can send a stop signal to the drive motor 5.

[0095] It should be noted that the second limiting member 35 can be located at the beginning of the rotation path of the second link 32 or further back. In this case, when the opening and closing plate 4 reaches the closed position, the first link 31 or the second link 32 can abut against the second limiting member 35, or be a certain distance away from the second limiting member 35. For example, if the second limiting member 35 is located at the beginning of the rotation path of the second link 32, then when the opening and closing plate 4 reaches the closed position, the second link 32 can abut against the second limiting member 35.

[0096] For example, the second limiting member 35 can be located further back in the rotation path of the second connecting rod 32. In this case, when the opening and closing plate 4 reaches the closed position, the second connecting rod 32 is still a certain distance away from the second limiting member 35. In the above situation, during the use stage after the range hood is assembled, the structure of the smoke hood itself can limit the closed position of the opening and closing plate 4, preventing it from going deep into the smoke collection chamber 102. During the stage when the range hood is not assembled, that is, when the structure of the smoke collection hood itself is not fully assembled, the second limiting member 35 can prevent the opening and closing plate 4 from going deep into the smoke collection chamber 102 during the assembly process, thus preventing the other structures of the smoke collection hood from being assembled normally. Therefore, through the above design, the opening and closing plate 4 can be prevented from affecting the normal assembly of other components, ensuring the smooth progress of the entire assembly process of the range hood.

[0097] In this way, the first limiting member 34 and the second limiting member 35 can prevent the opening and closing plate 4 from exceeding its mechanical stroke due to motor overload or control failure, thus avoiding damage to the components. For example, the first limiting member 34 can prevent the opening and closing plate 4 from opening excessively, causing the clearance groove 311 to detach from the lamp panel 13.

[0098] like Figure 8 and Figure 9As shown, in some specific embodiments, the active opening and closing mechanism includes a mounting frame 2, a first link 31, a second link 32, and a third link 33, and the first link 31 is provided with a clearance groove 311. The passive opening and closing mechanism only includes the mounting frame 2 and the first link 31, and the first link 31 is also provided with a clearance groove 311.

[0099] like Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the specific working process of the opening and closing mechanism of this utility model is as follows:

[0100] Switching from the closed position to the open position: In the initial state, the opening and closing plate 4 is closed and in contact with the lamp panel 13, sealing it, and the second link 32 is near the second limiting member 35. The drive motor 5 rotates forward, causing the second link 32 to swing around the hinge point of the mounting bracket 2. The third link 33 transmits the swing of the second link 32 to the first link 31, pushing the first link 31 to rotate in the opening direction. The opening and closing plate 4 moves with the first link 31, gradually opening the smoke outlet 101. When the first link 31 approaches the first limiting member 34, a mechanical stop prevents further swinging; or a sensor triggers a signal, and the motor stops rotating. The opening and closing plate 4 is fully opened, and the clearance groove 311 accommodates the lamp panel 13.

[0101] Switching from the open to the closed position: In the initial state, the opening and closing plate 4 is in the open position, and the second link 32 contacts the first limit member 34. The drive motor 5 reverses, causing the second link 32 to swing in the opposite direction. The third link 33 pulls the first link 31 to rotate in the closing direction, and the opening and closing plate 4 gradually closes. When the second link 32 approaches or contacts the second limit member 35, the mechanical stop or sensor is triggered, and the motor stops. At this time, the opening and closing plate 4 contacts and seals with the lamp panel 13, and the oil fume leakage rate is controlled to a minimum.

[0102] like Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, according to some embodiments of the present invention, when the opening and closing plate 4 is in the open position, the included angle between the opening and closing plate 4 and the smoking port 101 ranges from 70° to 110°.

[0103] It is understandable that when the included angle is within the range of 70° to 90°, the tilt angle of the opening and closing plate 4 is relatively small, forming a converging fume extraction channel, thereby reducing the escape of fumes. Therefore, it is suitable for scenarios with small-scale fumes generated during small-scale cooking. However, when the included angle is within the range of 90° to 110°, the upward angle of the opening and closing plate 4 increases, expanding the effective coverage area of ​​the fume extraction port 101. Therefore, it is suitable for scenarios with large-scale fumes generated during Chinese stir-frying. In this way, by adjusting the included angle, the fume hood of this invention can adapt to different application scenarios, improving the user experience.

[0104] Regarding the "reinforcing structure 113 provided between the mounting bracket 2 and the side plate 12" mentioned above, the smoke hood of this utility model has at least two implementation methods. Two specific embodiments of the above-mentioned reinforcing structure 113 are given below.

[0105] Example 1: As Figures 1 to 9 As shown, the first reinforcing member is a first flange 114, which extends downward from one side edge of the top plate 11 toward the side plate 12 to form the first flange 114; the second reinforcing member is a second flange 122, which is formed by folding the upper edge of the side plate 12 toward the direction of the top plate 11 to form a horizontal flange 121, and the horizontal flange 121 extends downward to form the second flange 122. Both the first flange 114 and the second flange 122 extend in the front-rear direction, and the first flange 114 and the second flange 122 are attached together and fixedly connected by fasteners.

[0106] Example 2: The reinforcing structure 113 includes at least one reinforcing side beam (not shown in the figure) disposed on the lower surface of the top plate 11, the reinforcing side beam extending in the front-rear direction. It should be noted that this embodiment is another embodiment different from the first flange 114 and the second flange 122 given above. In this embodiment, the reinforcing structure 113 is only formed on the lower surface of the top plate 11, and the load-bearing capacity of the top plate 11 is improved by reinforcing the top plate 11 itself.

[0107] Specifically, at least one reinforcing side beam is fixed to the lower surface of the top plate 11, extending along the width direction of the top plate 11. The shape of this reinforcing side beam can be I-shaped, box-shaped, or T-shaped, etc., and this invention does not impose any special limitations. The reinforcing side beam can be fixed to the lower surface of the top plate 11 by integral molding, welding, bolts, or structural adhesive. It is understood that the reinforcing side beam can significantly improve the bending resistance of the top plate 11 by increasing the structural strength of the lower surface of the top plate 11, and simultaneously uniformly transfer the concentrated load on the upper part of the top plate 11 to the side plate 12 or supporting structure along the width direction.

[0108] like Figures 1 to 9As shown, the range hood according to the second aspect embodiment of the present invention includes a smoke collection hood as in the first aspect embodiment of the present invention, and also includes a blower box 7, which is fixed on the smoke collection hood and communicates with the smoke collection hood.

[0109] In some embodiments, the range hood further includes a fan assembly. The fan assembly is installed inside the fan box 7.

[0110] 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.

[0111] 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 smoke collection hood for a range hood, comprising a smoke inlet (101) and a smoke collection chamber (102) that are interconnected, characterized in that: Also includes: The smoke collection hood housing (1) includes a top plate (11) and side plates (12) respectively installed on both sides of the top plate (11) in the left-right direction; A hinged plate (4) is used to open or close the smoking port (101); The opening and closing mechanism for driving the opening and closing plate (4) includes a mounting frame (2) and a first connecting rod (31). The first connecting rod (31) is connected to the mounting frame (2) and the opening and closing plate (4). The mounting frame (2) is mounted on the lower surface of the top plate (11) and is disposed adjacent to the side plate (12). A reinforcing structure (113) is provided between the mounting frame (2) and the side plate (12).

2. The smoke collection hood of the range hood according to claim 1, characterized in that: The reinforcing structure (113) includes a first reinforcing member provided on the top plate (11) and a second reinforcing member provided on the side plate (12), the first reinforcing member and the second reinforcing member being fixedly connected by fasteners.

3. The smoke collection hood of the range hood according to claim 2, characterized in that: The first reinforcing member is a first flange (114), which is formed by extending downward from one side edge of the top plate (11) toward the side plate (12); the second reinforcing member is a second flange (122), which is formed by folding the upper edge of the side plate (12) toward the direction of the top plate (11) to form a horizontal flange (121), and the horizontal flange (121) extends downward to form the second flange (122); The first flange (114) and the second flange (122) both extend in the front-to-back direction, and the first flange (114) and the second flange (122) are attached together and fixedly connected by fasteners.

4. The smoke collection hood of the range hood according to claim 2, characterized in that: The mounting bracket (2) includes a mounting top plate (21) fixed to the lower surface of the top plate (11). The mounting top plate (21) extends in the front-back direction and has a downwardly extending mounting side wall (22) on one side edge facing the side plate (12). The first connecting rod (31) is connected to the mounting side wall (22).

5. The smoke collection hood of the range hood according to claim 4, characterized in that: The mounting top plate (21) is further provided with a downwardly extending reinforcing flange (23) on the side edge away from the side plate (12), the reinforcing flange (23) extending in the front-back direction.

6. The smoke collection hood of the range hood according to claim 1, characterized in that: The reinforcing structure (113) includes at least one reinforcing side beam disposed on the lower surface of the top plate (11), the reinforcing side beam extending in the front-rear direction.

7. The smoke collection hood of the range hood according to any one of claims 1 to 6, characterized in that: The opening and closing mechanism consists of two sets, namely an active opening and closing mechanism and a passive opening and closing mechanism. Both the active opening and closing mechanism and the passive opening and closing mechanism are installed on the lower surface of the top plate (11) and are located at both ends of the top plate (11) in the left-right direction. The number of the reinforcing structures (113) is two sets, and the two sets of reinforcing structures (113) are respectively located between the corresponding opening and closing mechanism and the side plate (12).

8. The smoke collection hood of the range hood according to claim 7, characterized in that: The smoke collection hood housing (1) also includes a lamp panel (13) located below the top plate (11), and a lighting fixture (6) is installed on the lamp panel (13); One end of the first connecting rod (31) is hinged to the mounting bracket (2) and the other end is fixedly connected to the opening and closing plate (4). The first connecting rod (31) is provided with a clearance groove (311) for avoiding the lamp panel (13).

9. The smoke collection hood of the range hood according to claim 8, characterized in that: The active opening and closing mechanism also includes a drive motor (5), a second link (32) and a third link (33). The second link (32) is hinged to the mounting bracket (2) and is connected to the drive end of the drive motor (5). The two ends of the third link (33) are respectively hinged to the second link (32) and the first link (31). The mounting bracket (2) is provided with a first limiting member (34) and a second limiting member (35) along the rotation path of the second connecting rod (32); the first limiting member (34) is used to limit the opening position of the opening and closing plate (4), and the second limiting member (35) is used to limit the closing position of the opening and closing plate (4).

10. A range hood, characterized in that, include: The smoke collection hood and air box (7) of the range hood as described in any one of claims 1 to 9; The bellows (7) is fixed on the smoke hood and is connected to the smoke hood.

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