Range hood

Abstract

This application discloses a smoke hood. The smoke hood includes a frame, a smoke collection assembly, an opening and closing component, a drive device, and a limiting component. The smoke collection assembly is mounted on the frame and has an air inlet. The opening and closing component is movably mounted on the smoke collection body; the opening and closing component is correspondingly arranged with respect to the air inlet. The limiting component is disposed in the transmission mechanism and is movable relative to the opening and closing component. The transmission mechanism includes a pushing component fixedly disposed relative to the opening and closing component. During the closing process of the smoke hood, the limiting component abuts against the pushing component to optimize the closing of the opening and closing component and restrict its movement. Through the above method, this application can optimize the closing of the opening and closing component.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to range hoods. Background Technology

[0002] Range hoods are designed to remove fumes and gases produced during cooking. In related technologies, range hoods enhance their smoke extraction effect by incorporating multiple air inlets. The opening and closing of these multiple inlets can be achieved through various methods. However, the presence of multiple inlets complicates the range hood's motion control, potentially leading to situations where the inlets fail to close completely. Summary of the Invention

[0003] Embodiments of this application provide a range hood that optimizes the closure of the opening and closing mechanism.

[0004] This application provides a smoke hood. The smoke hood includes a frame, a smoke collection assembly, an opening and closing component, a drive device, and a limiting component. The smoke collection assembly is mounted on the frame and has an air inlet. The opening and closing component is movably mounted on the smoke collection body; the opening and closing component is correspondingly arranged with respect to the air inlet. The limiting component is disposed in the transmission mechanism and is movable relative to the opening and closing component. The transmission mechanism includes a pushing component that is fixedly disposed relative to the opening and closing component. During the closing process of the smoke hood, the limiting component abuts against the pushing component to optimize the closing of the opening and closing component and restrict its movement.

[0005] Optionally, when the smoke hood is closed, the pusher and the limiter can mutually limit each other; the movement of the limiter toward the frame is restricted by the pusher; the movement of the opening and closing member toward the air inlet is restricted by the smoke collection assembly, and the movement of the opening and closing member away from the air inlet is restricted by the limiter and the pusher.

[0006] Optionally, the pusher includes a connecting part and a pusher part connected to each other, the pusher part being fixedly connected to the opening and closing part; the side of the pusher part facing the limiting part includes an arc-shaped segment and an abutting segment connected to each other, the arc-shaped segment being located on the side of the abutting segment away from the opening and closing part, and the abutting segment being used to abut against the limiting part.

[0007] Optionally, the limiting member includes a fixing part and a limiting part. The fixing part is connected to the transmission mechanism, and the limiting part is spaced apart from the transmission mechanism. The orthographic projection of the fixing part onto the transmission mechanism falls entirely within the surface of the transmission mechanism.

[0008] Optionally, the transmission mechanism includes a slider, a linkage mechanism, and a pusher; the slider is hinged to the linkage mechanism; the pusher is fixedly connected to the opening and closing member and is hinged to the linkage mechanism; the opening and closing member is hinged to the smoke collection assembly.

[0009] The limiting component is installed on the slider, and the fixing part is fixedly connected to the slider. The orthographic projection of the fixing part onto the slider falls completely within the surface of the slider.

[0010] One end of the connecting part is fixedly connected to the pushing part, and the other end is hinged to the linkage mechanism.

[0011] Optionally, the direction of the rotation axis of the opening / closing member relative to the smoke collection assembly, the direction of the rotation axis of the pushing member relative to the linkage mechanism, and the direction of the rotation axis of the slider and the linkage mechanism relative to each other are parallel to the first direction.

[0012] Optionally, the limiting member is disposed on one side of the slider in the first direction;

[0013] The pushing part is located on one side of the connecting part in the first direction, and at least a portion of the limiting member and the pushing part are located on the same side of the linkage mechanism. The limiting part can abut against the pushing part during the closing of the smoke machine.

[0014] Optionally, the slider, the limiting member, and the linkage mechanism are disposed within the smoke collection assembly. The smoke collection assembly has an opening, and the pusher passes through the opening and connects to the opening and closing member outside the smoke collection assembly. The part of the pusher that abuts against the limiting member is located at the end of the pusher near the opening and closing member, and is located within the smoke collection body when the smoke machine is closed.

[0015] Optionally, the smoke collection assembly includes a smoke collection body and a lifting body, the lifting body being movably installed on the smoke collection body; the lifting body and the smoke collection body can form a main air inlet; the smoke collection body is also provided with an air inlet; the lifting body and the opening and closing parts are connected by a transmission mechanism.

[0016] Optionally, the drive unit is connected to the lifting body; the drive unit drives the opening and closing parts to move through the lifting body and the transmission mechanism.

[0017] The beneficial effects of this application are as follows: Unlike existing technologies, the smoke collection assembly can draw in oil fumes by providing an air inlet. The air inlet can be opened or closed by providing an opening and closing component. Furthermore, when the opening and closing component is open, it also guides and collects smoke, directing more airflow towards the air inlet. A pushing component can push the opening and closing component to open or close. Furthermore, a limiting component can abut against the pushing component during the closing process of the lifting body, thereby promoting the closing of the opening and closing component and restricting its movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the smoke machine of this application;

[0019] Figure 2 yes Figure 1 The diagram shows the structure of the smoke collection assembly when the range hood is turned on.

[0020] Figure 3 yes Figure 1The diagram shows the airflow direction inside the range hood as observed from the rear when it is turned on.

[0021] Figure 4 yes Figure 1 The diagram shows the structure of the smoke collection assembly when the range hood is turned off.

[0022] Figure 5 yes Figure 2 The diagram shows the internal structure of the smoke collection assembly.

[0023] Figure 6 yes Figure 1 A partial cross-sectional view of an embodiment of the smoke collection assembly in the smoke hood shown in the open state;

[0024] Figure 7 yes Figure 1 A partial cross-sectional view of an embodiment of the smoke collection assembly in the smoke hood shown in the closed state;

[0025] Figure 8 yes Figure 6 A partial structural schematic diagram of the smoke collection assembly from another angle;

[0026] Figure 9 yes Figure 7 A partial structural schematic diagram of the smoke collection assembly from another angle;

[0027] Figure 10 yes Figure 1 A partial cross-sectional view of another embodiment of the smoke collection assembly in the smoke hood shown in the open state;

[0028] Figure 11 yes Figure 1 A partial cross-sectional view of another embodiment of the smoke collection assembly in the smoke hood shown in the closed state;

[0029] Figure 12 yes Figure 10 A partial structural schematic diagram of the smoke collection assembly from another angle;

[0030] Figure 13 yes Figure 11 A partial structural schematic diagram of the smoke collection assembly from another angle;

[0031] Figure 14 yes Figure 1 A schematic diagram of the smoke collection assembly pusher not assembled with the opening / closing component;

[0032] Figure 15 yes Figure 14 A schematic diagram of the central smoke collection component from another angle;

[0033] Figure 16 yes Figure 14 A schematic diagram of the structure of the central pusher component. 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] Combination Figure 1 This application provides a range hood 1. The range hood 1 includes a frame 10, a smoke collection assembly 20, and an opening / closing component 30. The smoke collection assembly 20 has an air inlet 211. The opening / closing component 30 is correspondingly provided with the air inlet 211. The range hood 1 can be installed on a wall or other mounting location via the frame 10. The range hood 1 has a mounting surface; for example, if the range hood 1 is installed on a wall, the surface of the wall is the mounting surface of the range hood 1. The frame 10 is provided with an air outlet (not shown), which can be connected to an external flue via a pipe. A volute is also provided inside the frame 10, and a centrifugal impeller is provided inside the volute. The volute can communicate with the interior of the smoke collection assembly 20, and the convection generated by the rotation of the centrifugal impeller can drive the gas inside the smoke collection assembly 20 to the air outlet for discharge.

[0036] In some embodiments, combined with Figure 2 and Figure 3 The smoke collection assembly 20 is installed on the frame 10. The smoke collection assembly 20 collects smoke and then discharges it through the frame 10. The smoke collection assembly 20 includes a smoke collection body 21 and a lifting body 22, with the lifting body 22 movably installed on the smoke collection body 21. The lifting body 22 and the smoke collection body 21 form a main air inlet 201. An opening / closing component 30 is movably installed on the smoke collection body 21. An air inlet 211 is also provided on the smoke collection body 21. The opening / closing component 30 is movably installed on the smoke collection body 21, corresponding to the air inlet 211. The lifting body 22 moves relative to the smoke collection body 21, thereby opening or closing the main air inlet 201. The opening / closing component 30 can move relative to the smoke collection body 21 to open or close the air inlet 211. The main air inlet 201 can cooperate with the air inlet 211 to draw in smoke from different locations, thereby improving the smoke extraction effect of the range hood 1. The lifting body 22, by actively closing the main air inlet 201, and the opening / closing component 30, by actively closing the air inlet 211, can also improve the aesthetics of the range hood 1 when closed. The range hood 1 has an open state and a closed state. In the open state, the main air inlet 201 and the air inlet 211 are open; in the closed state, the main air inlet 201 and the air inlet 211 are closed. In some embodiments, the opening / closing component 30 can be connected separately to the drive device 70 via the transmission mechanism 40 to realize the opening and closing of the opening / closing component 30. Optionally, the drive device 70 can also simultaneously drive the lifting body 22 and the opening / closing component 30 to open and close.

[0037] In some embodiments, combined with Figure 2 The main air inlet 201 and the air inlet 211 face the same direction. For example, both the main air inlet 201 and the air inlet 211 can be directed away from the mounting surface of the range hood 1 (e.g., a wall) to draw in fumes. The range hood 1 can absorb cooking fumes from the side of the cooktop, freeing up space above the cooktop. Furthermore, this method, while providing adequate cooking space, ensures that the main air inlet 201 and the air inlet 211 are not too far from the cooktop, reducing the possibility of reduced smoke extraction efficiency.

[0038] In other embodiments, the main air inlet 201 and the air inlet 211 may also be positioned facing away from the frame 10, thereby freeing up space on the side near the mounting surface of the range hood 1. Optionally, the plane containing the main air inlet 201 and the air inlet 211 may also be installed at a certain angle relative to the mounting surface of the range hood 1. By employing these methods, the restriction on the cooking space caused by the configuration of the range hood 1 can be reduced, thus minimizing safety hazards caused by insufficient cooking space.

[0039] In some embodiments, the range hood 1 has a front side and a rear side. The rear side of the range hood 1 can abut against a wall or mounting surface, and both the main air inlet 201 and the air inlet 211 face the front side. When the range hood 1 is in the open state, the smoke collection body 21 is disposed between the frame 10 and the lifting body 22, and the main air inlet 201 is further away from the frame 10 than the air inlet 211. This arrangement brings the main air inlet 201 closer to the cooktop, enabling it to quickly draw in most of the cooking fumes. The air inlet 211, being further away from the cooktop than the main air inlet 201, can draw in any cooking fumes that the main air inlet 201 fails to completely draw in. Through this method, cooking fumes can be drawn in in sections, improving the smoke extraction effect of the range hood 1.

[0040] In some embodiments, when the range hood 1 is in the open state, the lifting body 22 moves away from the smoke collecting body 21 to open the main air inlet 201, and the opening / closing member 30 moves away from the air inlet 211 to open the air inlet 211. When the range hood 1 is in the closed state, the lifting body 22 moves towards the smoke collecting body 21 to close the main air inlet 201, and the opening / closing member 30 moves towards the air inlet 211 to close the air inlet 211.

[0041] In some embodiments, the smoke collection body 21 includes a rear plate and a front plate spaced apart, and a plurality of side plates connecting the front plate and the rear plate. The air inlet 211 is opened on the side of the front plate away from the lifting body 22. The lifting body 22 can be accommodated between the front plate and the rear plate.

[0042] The front panel, side panels, and rear panel form a cuboid shape around the smoke collection body 21. The thickness of the side panels in the direction between the front and rear panels is maintained at a preset value. And / or the range hood 1 has a mounting surface parallel to the rear and front panels, with each part of the front panel equidistant from the mounting surface. In other words, the smoke collection body 21 of this application has a consistent thickness, thereby reducing the space occupied by the smoke collection body 21 in the cooking space. Optionally, the thickness of the frame 10 in the direction away from the mounting surface is greater than the thickness of the smoke collection body 21 in the direction away from the mounting surface. Optionally, the distance between the front and rear panels is maintained at a preset value. It should be noted that the front, rear, or side panels undergo sheet metal processing during manufacturing for strength and assembly considerations, resulting in some protrusions or depressions. The aforementioned distance measurement can be based on the plane containing the largest part of the sheet metal area.

[0043] In some embodiments, the range hood 1 has orthogonal first, second, and third directions. The second direction is the spacing between the frame 10 and the smoke collection body 21; the third direction is the orientation of the main air inlet 201 and the air inlet 211; and the first direction is the axis of rotation of the opening / closing member 30 relative to the smoke collection body 21. When the range hood 1 is installed, the second direction can be the direction of gravity, the third direction can be the direction away from the wall, and the first direction can be horizontal.

[0044] During the opening process of the range hood 1, the lifting body 22 and the opening / closing component 30 need to be moved to open the main air inlet 201 and the air inlet 211. During the closing process of the range hood 1, the lifting body 22 and the opening / closing component 30 need to be moved to close the main air inlet 201 and the air inlet 211. Due to the limited space inside the range hood 1, driving the opening / closing component 30 and the lifting body 22 through different drive devices would not only occupy a lot of space, but also make it quite difficult to synchronize the movements of the lifting body 22 and the opening / closing component 30.

[0045] Combination Figure 5 To address the aforementioned technical problems, in the range hood 1 provided in this application embodiment, the opening / closing component 30 and the lifting body 22 are connected via a transmission mechanism 40. Thus, by driving either the opening / closing component 30 or the lifting body 22 with a single drive device 70, the movements of both the lifting body 22 and the opening / closing component 30 can be driven simultaneously. Furthermore, the movements of the lifting body 22 and the opening / closing component 30 have good synchronization, enabling the main air inlet 201 and the air inlet 211 to open or close simultaneously. Through this method, the motion control of the range hood 1 can be optimized.

[0046] In some embodiments, the range hood 1 includes a drive device 70, which is drivenly connected to the lifting body 22. The drive device 70 drives the opening / closing member 30 to move through the lifting body 22 and the transmission mechanism 40. In other words, during the opening and closing process of the range hood 1, the lifting body 22 is the driving member, and the opening / closing member 30 is the driven member. Since the lifting body 22 has a larger volume than the opening / closing member 30, the lifting body 22 requires a larger driving force than the opening / closing member 30. Directly driving the drive device 70 to the lifting body 22 enables the lifting body 22 to have sufficient driving force to move. The opening / closing member 30 requires a smaller driving force than the lifting body 22, and the transmission mechanism 40 also experiences energy loss during transmission. Therefore, setting the lifting body 22 as the driving member and the opening / closing member 30 as the driven member allows the driving force required for the movement between the components to be matched with the drive device 70 and the transmission mechanism 40, further optimizing the motion control of the range hood 1.

[0047] Combination Figures 5 to 9 In some embodiments, the transmission mechanism 40 includes a slider 41, a linkage mechanism 42, and a pusher 43. The slider 41 is fixedly connected to the lifting body 22, slidably connected to the smoke collecting body 21, and hinged to the linkage mechanism 42. The lifting body 22 is slidably connected to the smoke collecting body 21. The pusher 43 is fixedly connected to the opening / closing member 30 and hinged to the linkage mechanism 42. The opening / closing member 30 is hinged to the smoke collecting body 21. In this way, during the lifting process, the lifting body 22 can drive the linkage mechanism 42 and the pusher 43 to follow, thereby driving the opening / closing member 30 to rotate.

[0048] In some embodiments, the directions of the rotation axis of the opening / closing member 30 relative to the smoke collection body 21, the rotation axis of the pushing member 43 relative to the linkage mechanism 42, and the rotation axis of the slider 41 and the linkage mechanism 42 relative to each other are parallel to the first direction. By doing so, the movement of each component of the transmission mechanism 40 can occupy less space in the first direction, thereby reducing the impact on the interior of the smoke collection body 21, reducing the influence of the transmission mechanism 40 on airflow, and reducing the possibility of noise generated by the interaction between the transmission mechanism 40 and the airflow.

[0049] In some embodiments, the transmission mechanism 40 has a first state and a second state. When the transmission mechanism 40 is in the first state, the range hood 1 is in the open state. When the transmission mechanism 40 is in the second state, the range hood 1 is in the closed state. The transmission mechanism 40 can switch between the first state and the second state by the movement of the opening / closing member 30 or the lifting body 22.

[0050] In some embodiments, when the transmission mechanism 40 is in the first state, the angle between the linkage mechanism 42 and the second direction is smaller than the angle between the linkage mechanism 42 and the second direction when the transmission mechanism 40 is in the second state.

[0051] In some embodiments, the slider 41 includes a sliding portion 411 and an extension portion 412 fixedly connected. The sliding portion 411 is slidably connected to the smoke collection body 21, and the extension portion 412 extends obliquely from the sliding portion 411 toward the front side in the direction toward the frame 10. In this way, the extension portion 412 can have sufficient length to connect with the linkage mechanism 42 even with limited space within the smoke collection body 21.

[0052] In some embodiments, when the transmission mechanism 40 is in the first and second states, the linkage mechanism 42 extends rearward from the slider 41 in the direction toward the frame 10. In this way, the linkage mechanism 42 can have sufficient length to connect with the frame 10 even with limited space within the smoke collection body 21.

[0053] In some embodiments, at least when the transmission mechanism 40 is in a first state, the pusher 43 extends obliquely forward from the linkage mechanism 42 in the direction toward the frame 10. Optionally, when the transmission mechanism 40 is in a second state, the pusher 43 extends obliquely forward from the linkage mechanism 42 in the direction toward the frame 10. By means of the above, the pusher 43 can be housed within the smoke collection body 21, thereby reducing the problem of incomplete closure of the opening / closing member 30 due to the inability to accommodate the pusher 43.

[0054] In summary, due to the limited space inside the smoke collection body 21 in the third direction, and the certain distance between the lifting body 22 and the opening / closing member 30 in the second direction, each component of the transmission mechanism 40 needs to have sufficient length, and the length of each component of the transmission mechanism 40 in the third direction cannot exceed that of the smoke collection body 21. Based on this, the components of the transmission mechanism 40 can be designed to extend at an angle relative to the second direction, enabling the transmission mechanism 40 to connect the opening / closing member 30 and the lifting body 22 within a limited space, without affecting the reception of the pushing member 43 when the opening / closing member 30 is closed.

[0055] In some embodiments, the slider 41 and the linkage mechanism 42 are disposed within the smoke collection body 21, and the smoke collection body 21 is provided with an opening 212 (connected to...). Figure 14 The pusher 43 is connected to the opening 212 and the opening / closing part 30 outside the smoke collection body 21.

[0056] Combination Figures 10 to 13In some embodiments, the smoke hood 1 further includes a limiting member 50, which is disposed on the transmission mechanism 40 and is movable relative to the opening / closing member 30. Specifically, the limiting member 50 is fixedly disposed relative to the lifting body 22 and is movably engaged with the smoke collecting body 21. The smoke hood 1 also includes a pushing member 43 capable of pushing the opening / closing member 30 to close or open. During the closing process of the smoke hood 1, the limiting member 50 can abut against the pushing member 43 to close the opening / closing member 30 and restrict its movement.

[0057] Specifically, in this embodiment, the lifting body 22 can be driven to connect with the opening / closing component 30 via the transmission mechanism 40, or the lifting body 22 can be disconnected from the opening / closing component 30. The lifting body 22 and the opening / closing component 30 can also be driven to open and close independently via their respective drive mechanisms, or they can be opened or closed manually; no specific limitations are made here. During the closing process of the range hood 1, the limiting component 50 can abut against the pushing component 43, thereby promoting the closing of the opening / closing component 30 during the closing process of the range hood 1. This increases the synchronicity of the closing of the lifting body 22 and the opening / closing component 30 during the closing process of the range hood 1, and reduces the possibility of the opening / closing component 30 not closing completely. Optionally, in some embodiments, the range hood 1 may not have a lifting body 22, and the opening / closing component 30 can be driven to connect with the drive device 70 via the transmission mechanism 40.

[0058] In conjunction with the foregoing embodiments, the lifting body 22 and the opening / closing member 30 can be driven and connected by the transmission mechanism 40. During the process of the transmission mechanism 40 moving from the first state to the second state, the limiting member 50 abuts against the pushing member 43, and during the process of the transmission mechanism 40 moving from the second state to the first state, the limiting member 50 separates from the pushing member 43.

[0059] Specifically, although the lifting body 22 and the opening / closing component 30 are connected by the transmission mechanism 40, enabling their movements to be linked, during actual transmission, when the range hood 1 is closed, the various components in the transmission mechanism 40 experience increased compressive stress due to angle changes. These components may exhibit insufficient rigidity or stability, meaning the transmission mechanism 40 is more prone to deformation during the closing process. If the transmission mechanism 40 deforms, the movement of the lifting body 22 may not be fully transmitted to the opening / closing component 30, resulting in the lifting body 22 reaching its stroke end point, but the opening / closing component 30 not reaching its stroke end point (i.e., the opening / closing component 30 does not close properly).

[0060] To improve this situation, embodiments of this application can use a limiting member 50 that abuts against the pushing member 43 to improve the closing of the opening / closing member 30. The limiting member 50 differs from the transmission mechanism 40; its length can be shorter, for example, it can be a limiting block or a limiting protrusion. The limiting member 50 has sufficient rigidity and stability. The limiting member 50 can directly abut against the pushing member 43 to promote the closing of the opening / closing member 30, at least improving the technical problem of incomplete closure of the opening / closing member 30 caused by deformation of the linkage mechanism 42.

[0061] Furthermore, when the smoke hood 1 is closed, the pusher 43 and the limiter 50 can mutually limit each other. The movement of the opening / closing member 30 towards the air inlet 211 is restricted by the smoke collection body 21, and the movement of the limiter 50 towards the frame 10 can be limited by the pusher 43. The movement of the opening / closing member 30 away from the air inlet 211 is limited by the limiter 50 and the pusher 43.

[0062] On the one hand, the movement of the opening / closing member 30 toward the air inlet 211 is restricted by the smoke collection body 21, preventing the pushing member 43 from rotating further toward the frame 10. The movement of the limiting member 50 toward the frame 10 is also limited by the pushing member 43. After the movement of the limiting member 50 toward the frame 10 is limited by the pushing member 43, a limiting force is generated. This limiting force can be transmitted to the drive device 70 through the slider 41 and the lifting body 22, allowing the drive device 70 to determine that the smoke machine 1 has been closed by sensing the limiting force, and then close the drive device 70. On the other hand, after the drive device 70 closes, it can limit the movement of the lifting body 22, thereby at least restricting the limiting member 50 from moving away from the pushing member 43. In this case, the movement of the opening / closing member 30 away from the air inlet 211 can be limited by the pushing member 43 and the limiting member 50, preventing the opening / closing member 30 from opening under these circumstances.

[0063] In some embodiments, specifically, the limiting member 50 is mounted on the slider 41, and the limiting member 50 includes a fixing part 51 and a limiting part 52. The fixing part 51 is connected to the transmission mechanism 40, and the limiting part 52 is spaced apart from the transmission mechanism 40. The orthographic projection of the fixing part 51 onto the transmission mechanism 40 falls completely within the surface of the transmission mechanism 40.

[0064] Specifically, the fixing part 51 is fixedly connected to the slider 41, and the limiting part 52 is spaced apart from the slider 41. The projection of the fixing part 51 onto the slider 41 falls entirely within the surface of the slider 41. In this way, the protrusion of the fixing part 51 relative to the slider 41 can be reduced, thereby reducing the impact of the fixing part 51 on the internal structure of the smoke collection body 21, reducing the impact of the fixing part 51 on smoke exhaust, and reducing the generation of eddies and noise. The spaced arrangement of the limiting part 52 and the slider 41 allows for the hinge connection between the slider 41 and the linkage mechanism 42, and also facilitates the correspondence between the limiting part 52 and the pushing member 43, making it easier for the limiting part 52 and the pushing member 43 to abut.

[0065] In some embodiments, the limiting member 50 is disposed on one side of the slider 41 in the first direction. The pushing member 43 includes a connecting portion 431 and a pushing portion 432 connected to each other. The connecting portion 431 is hinged to the linkage mechanism 42, and the pushing portion 432 is fixedly connected to the opening / closing member 30. The pushing portion 432 is located on one side of the connecting portion 431 in the first direction, and at least a portion of the limiting member 50 and the pushing portion 432 are located on the same side of the linkage mechanism 42. The limiting member 50 can abut against the pushing portion 432 during the closing of the smoke machine 1. In this manner, the pushing portion 432 and the limiting portion 52 can be offset to the same side relative to the linkage mechanism 42, the position of the pushing portion 432 and the position of the limiting portion 52 can be matched, and the interference between the movement process of the linkage mechanism 42 and the abutment process of the limiting member 50 and the pushing member 43 can be reduced. Furthermore, the limiting member 50 can be disposed on the side of the slider 41 away from the middle of the smoke collecting body 21 in the first direction, and the pushing part 432 can be disposed on the side of the connecting part 431 away from the middle of the smoke collecting body 21 in the first direction. In this way, the limiting part 52 and the pushing part 432 can be disposed on the outer side relative to the smoke collecting body 21, so as to reduce the influence of the placement of the limiting part 52 and the pushing part 432 on the airflow movement inside the smoke collecting body 21.

[0066] In some embodiments, the slider 41, the limiting member 50, and the linkage mechanism 42 are disposed within the smoke collecting body 21. The smoke collecting body 21 has an opening 212, and the pusher 43 passes through the opening 212 and connects to the opening / closing member 30 outside the smoke collecting body 21. The portion of the pusher 43 that abuts against the limiting member 50 is located at the end of the pusher 43 closer to the opening / closing member 30. When the smoke machine 1 is closed, the portion of the pusher 43 that abuts against the limiting member 50 is located inside the smoke collecting body 21. Further improvements to the abutting position can further reduce the problem of incomplete closure of the opening / closing member 30 caused by deformation during the abutment between the limiting member 50 and the pusher 43. Specifically, since the portion of the pusher 43 that abuts against the limiting member 50 is located at the end of the pusher 43 closer to the opening / closing member 30, the lever arm distance between the pusher 43 and the limiting member 50 is short during the abutment between the limiting member 50 and the pusher 43, resulting in a smaller torque and making it less prone to deformation of the pusher 43.

[0067] In some embodiments, the pusher 43 includes a connecting portion 431 and a pusher portion 432 connected to each other. The pusher portion 432 is fixedly connected to the opening / closing member 30. Optionally, the connecting portion 431 may be hinged to the linkage mechanism 42. The side of the pusher portion 432 facing the limiting member 50 includes an arcuate segment 4321 and an abutment segment 4322 (connected) connected to each other. Figure 15 and 16 The arc-shaped segment 4321 is located on the side of the abutment segment 4322 that is far from the closing member 30. The abutment segment 4322 is used to abut against the limiting member 50. The opening and closing member 30 is rotatably connected to the smoke collecting body 21, but the pushing member 43 is relatively fixedly connected to the opening and closing member 30, and the pushing member 43 is also rotatably connected to the smoke collecting body 21. In order to reduce the interference between the pushing member 43 and the smoke collecting body 21, the pushing member 432 can be provided with an arc-shaped segment 4321 on the side facing the limiting member 50. The arc-shaped segment 4321 can cooperate with the rotation of the pushing member 43, so that the distance between the pushing member 43 and the smoke collecting body 21 changes slightly during the movement, thereby reducing interference.

[0068] Optionally, the center of the arc segment 4321 is located at the rotation axis of the opening / closing member 30 and the smoke collecting body 21. Further, to facilitate the contact between the limiting member 50 and the pushing member 43, the portion of the pushing member 43 near the opening / closing member 30 is provided with an abutment segment 4322 to facilitate contact between the limiting member 50 and the pushing member 43. Optionally, the abutment segment 4322 is a straight segment with an abutment plane, and can form a planar abutment with the limiting member 50.

[0069] Combination Figures 14 to 16 In some embodiments, the smoke hood 1 includes a pusher 43. The pusher 43 can push the opening / closing member 30 to open or close. The pusher 43 can be connected to the lifting body 22 via a linkage mechanism 42 and a slider 41, as in the aforementioned embodiments. The pusher 43 can also be driven to the opening / closing member 30 via a separate drive mechanism. The pusher 43 can also dampen with the smoke collecting body 21, which is not specifically limited here. At least one side of the pusher 43 is provided with a latching part 60, and the pusher 43 selectively engages with the smoke collecting body 21 through the latching part 60. When the pusher 43 is engaged with the smoke collecting body 21, at least a portion of the pusher 43 is located outside the smoke collecting body 21.

[0070] Specifically, during the assembly of the smoke hood 1, the pushing component 43 and the opening / closing component 30 need to be fixedly assembled. However, before the pushing component 43 and the opening / closing component 30 are assembled, the pushing component 43, without the restraint of the opening / closing component 30, is prone to falling into the smoke collection body 21, causing inconvenience to the assembly work. A latching part 60 is provided on one side of the pushing component 43, which allows the pushing component 43 to be latched onto the smoke collection body 21 before assembly with the opening / closing component 30 is completed, preventing the pushing component 43 from falling into the smoke collection body 21. After the pushing component 43 and the opening / closing component 30 are assembled, the latching part 60 can be released from the smoke collection body 21, allowing the pushing component 43 to normally drive the opening / closing component 30 to open or close.

[0071] In some embodiments, the smoke collection body 21 is provided with a locking portion for engaging with the latching portion 60. The pusher 43 engages with the locking portion at least when it is separated from the opening / closing member 30, to restrict the pusher 43 from entering the interior of the smoke collection body 21. The locking portion may be a locking groove, a locking hole, or a locking hook, etc., and is not specifically limited here.

[0072] In some embodiments, the latching portion 60 is disposed on the side of the pusher 43 near the axis of rotation between the opening / closing member 30 and the smoke collection body 21. The opening / closing member 30 is rotatably connected to the smoke collection body 21, and the pusher 43 is fixedly connected to the opening / closing member 30, so the pusher 43 is also rotatably connected to the smoke collection body 21. During rotation, the latching portion 60 is prone to interference with the smoke collection body 21. To improve this technical problem, the latching portion 60 can be disposed on the side of the pusher 43 near the axis of rotation between the opening / closing member 30 and the smoke collection body 21. Since the travel distance of the pusher 43 near the axis of rotation between the opening / closing member 30 and the smoke collection body 21 is shorter during rotation, the latching portion 60 has less movement during the movement of the pusher 43, reducing the possibility of interference with the smoke collection body 21. Furthermore, at least a portion of the pusher 43 away from the axis of rotation between the opening / closing member 30 and the smoke collection body 21 is arc-shaped. This further reduces the possibility of interference between the pusher 43 and the smoke collection body 21. In other embodiments, a latching portion 60 is provided on at least one side of the pusher 43 in the direction of the rotation axis between the opening / closing member 30 and the smoke collection body 21.

[0073] In some embodiments, the smoke collecting body 21 is provided with an opening 212 through which the pusher 43 passes. A locking portion is provided on the smoke collecting body 21 at the end of the opening 212 near the axis of rotation between the opening / closing member 30 and the smoke collecting body 21. Since the pusher 43 can be internally connected to the lifting body 22 via a linkage mechanism 42 and a slider 41, the portion of the pusher 43 that can be pulled out of the smoke collecting body 21 is limited even when not assembled with the opening / closing member 30. This method allows the locking position of the pusher 43 to be close to the position where the pusher 43 is located when the opening / closing member 30 is opened after assembly, thus improving the problem of limited movable portion of the pusher 43. Furthermore, since the positions of the pusher 43 and the opening / closing member 30 are similar before and after assembly, the assembly of the opening / closing member 30 and the pusher 43 can also be performed with the pusher 43 locked in the smoke collecting body 21, further facilitating the assembly of the pusher 43 and the opening / closing member 30.

[0074] Combination Figure 14 In some embodiments, the opening 212 includes a first portion 2121 and a second portion 2122 that are interconnected. The first portion 2121 is used for the movement of the pusher 43. The first portion 2121 of the opening 212 allows the pusher 43 to move before and after it is assembled with the opening / closing member 30. The second portion 2122 is correspondingly provided with a locking part on the smoke collection body 21, and is used for the fastening part 60 to pass through. The second portion 2122 of the opening 212 can correspond to the side plate or the rear plate of the smoke collection body 21. Before the pusher 43 is assembled with the opening / closing member 30, the fastening part 60 can engage with the locking part through the second portion 2122 of the opening 212. After the pusher 43 is assembled with the opening / closing member 30, the second portion 2122 of the opening 212 no longer engages with the fastening part 60. In other words, the second part 2122 of the opening 212 can expose the engaging part, which facilitates the engagement of the latching part 60 with the engaging part, and also facilitates the disengagement of the latching part 60 from the engaging part.

[0075] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A range hood, characterized in that, include: frame; A smoke collection assembly is mounted on the frame and has an air inlet. An opening and closing component is movably installed on the smoke collection body, and the opening and closing component is correspondingly provided with the air inlet; The drive device is connected to the opening and closing component via a transmission mechanism; A limiting member is disposed in the transmission mechanism and is movable relative to the opening and closing member; the transmission mechanism includes a pushing member that is fixedly disposed relative to the opening and closing member; During the closing process of the range hood, the limiting member abuts against the pushing member to optimize the closing of the opening and closing member and restrict its movement.

2. The range hood according to claim 1, characterized in that: When the smoke hood is closed, the pusher can limit the movement of the limiting member towards the frame; the movement of the limiting member towards the frame is restricted by the pusher; the movement of the opening and closing member towards the air inlet is restricted by the smoke collection assembly, and the movement of the opening and closing member away from the air inlet is restricted by the limiting member and the pusher.

3. The range hood according to claim 1, characterized in that: The pushing member includes a connecting part and a pushing part connected to each other, and the pushing part is fixedly connected to the opening and closing member; the side of the pushing part facing the limiting member includes an arc-shaped segment and an abutting segment connected to each other, the arc-shaped segment is located on the side of the abutting segment away from the opening and closing member, and the abutting segment is used to abut against the limiting member.

4. The range hood according to claim 3, characterized in that: The limiting member includes a fixing part and a limiting part. The fixing part is connected to the transmission mechanism, and the limiting part is spaced apart from the transmission mechanism. The orthographic projection of the fixing part onto the transmission mechanism falls entirely within the surface of the transmission mechanism.

5. The range hood according to claim 4, characterized in that: The transmission mechanism includes a slider, a linkage mechanism, and a pushing member; the slider is hinged to the linkage mechanism; the pushing member is fixedly connected to the opening and closing member and hinged to the linkage mechanism; the opening and closing member is hinged to the smoke collection assembly. The limiting member is installed on the slider, the fixing part is fixedly connected to the slider, and the orthographic projection of the fixing part on the slider falls completely within the surface of the slider; One end of the connecting part is fixedly connected to the pushing part, and the other end is hinged to the linkage mechanism.

6. The range hood according to claim 5, characterized in that: The directions of the rotation axis of the opening / closing member relative to the smoke collection assembly, the rotation axis of the pushing member relative to the linkage mechanism, and the rotation axis of the slider and the linkage mechanism relative to each other are parallel to the first direction.

7. The range hood according to claim 6, characterized in that: The limiting member is disposed on one side of the slider in the first direction; The pushing part is located on one side of the connecting part in the first direction, and at least a portion of the limiting member and the pushing part are located on the same side of the linkage mechanism. The limiting part can abut against the pushing part during the closing of the smoke machine.

8. The range hood according to claim 7, characterized in that: The slider, the limiting member, and the linkage mechanism are disposed within the smoke collection assembly. The smoke collection assembly has an opening, and the pusher passes through the opening and connects to the opening and closing member outside the smoke collection assembly. The part of the pusher that abuts against the limiting member is located at one end of the pusher near the opening and closing member, and is located within the smoke collection body when the smoke machine is closed.

9. The range hood according to any one of claims 1-8, characterized in that: The smoke collection assembly includes a smoke collection body and a lifting body, the lifting body being movably installed on the smoke collection body; the lifting body and the smoke collection body can form a main air inlet; the smoke collection body is also provided with the air inlet; the lifting body and the opening / closing member are connected by a transmission mechanism.

10. The range hood according to claim 9, characterized in that: The driving device is connected to the lifting body; the driving device drives the opening and closing parts to move through the lifting body and the transmission mechanism.

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