Ultrathin range hood

Abstract

The invention discloses an ultrathin range hood which comprises a smoke collecting shell with a window in a front plate, and a fan positioned in the smoke collecting shell, the base plate is transversely and rotationally arranged at the top of the window, the smoke baffle is arranged at the bottom of the base plate, and the smoke inlet plate is transversely and rotationally arranged at the bottom of the window and provided with a smoke inlet. The base plate and the smoke inlet plate are movably connected through a linkage assembly so that the base plate and the smoke inlet plate can rotate synchronously, and the ultrathin range hood has the closed state that the base plate, the smoke inlet plate and the smoke baffle are folded at the window at the same time and the open state that the base plate, the smoke inlet plate and the smoke baffle stretch out towards the front side of the window at the same time. In the open state, the smoke baffle is located on the front side of the smoke inlet and used for blocking oil smoke and guiding the oil smoke to the smoke inlet; the transmission assembly is in transmission connection with the driver and the base plate, and the driver is used for driving the base plate to rotate through the transmission assembly. The electronic cigarette has the beneficial effects that the smoking range can be effectively expanded in a working state, so that the smoking efficiency is improved.

Description

Technical Field

[0001] The present invention relates to an ultra-thin range hood, belonging to the technical field of kitchen appliances. Background Art

[0002] The ultra-thin range hood is a modern kitchen appliance, characterized by its thin body, efficient smoke suction and exhaust, and fashionable design, suitable for consumers who pursue both beauty and functionality.

[0003] In the prior art, due to the ultra-thin form of the body of the ultra-thin range hood, the smoke inlet of the ultra-thin range hood is relatively backward in the spatial position relative to the cooking appliance. Even if the ultra-thin range hood uses structures such as a smoke baffle to block the oil fume, it still cannot completely solve the congenital defect that the position of the smoke inlet is relatively backward, resulting in the situation that the oil fume is likely to escape when the ultra-thin range hood sucks the oil fume. Summary of the Invention

[0004] The purpose of the present invention is to provide an ultra-thin range hood that can effectively expand the smoke suction range in the working state, thereby improving the smoke suction efficiency.

[0005] The present invention is realized by the following technical solutions.

[0006] An ultra-thin range hood includes a smoke collecting housing with a window on the front plate and a blower located inside the smoke collecting housing; And, a substrate horizontally rotatably arranged at the top of the window, a smoke baffle arranged at the bottom of the substrate, and a smoke inlet plate horizontally rotatably arranged at the bottom of the window and having a smoke inlet; the substrate and the smoke inlet plate are movably connected by a linkage assembly so that the two can rotate synchronously. The ultra-thin range hood has a closed state in which the substrate, the smoke inlet plate and the smoke baffle are all retracted into the window, and an open state in which they all extend forward of the window. In the closed state, the smoke baffle blocks the smoke inlet, and in the open state, the smoke baffle is located in front of the smoke inlet to block the oil fume and guide it to the smoke inlet; And, a driver and a transmission assembly drivingly connecting the driver and the substrate, the driver being used to drive the substrate to rotate through the transmission assembly.

[0007] As a further improvement of the present invention, the smoke collecting housing is provided with a rotation connection assembly movably connected to at least one of the substrates. The rotation connection assembly defines the maximum rotation angle of the substrate, and the maximum rotation angle corresponds to the open state of the ultra-thin range hood; the smoke baffle is horizontally rotatably arranged at the bottom of the substrate, and the transmission assembly is also drivingly connected to the smoke baffle so that the smoke baffle can rotate around the bottom of the substrate to expand the front and rear range of the smoke baffle blocking the oil fume.

[0008] As a further improvement of the present invention, the transmission assembly includes a driving link rotatably connected to the driver, a main transmission link rotatably connected to the substrate, a secondary transmission link rotatably connected to the smoke baffle, and an elastic member connecting the main transmission link and the substrate; the driver is configured for linear drive, the ends of the driving link and the main transmission link are rotatably connected, and the end of the secondary transmission link is rotatably connected to the rod body of the main transmission link, so that the substrate and the smoke baffle are relatively stationary during the process of the ultra-thin range hood transitioning from the closed state to the open state, and when the ultra-thin range hood reaches the open state and the driver continues to drive, the smoke baffle rotates around the bottom of the substrate in an adjustment state.

[0009] As a further improvement of the present invention, during the process of the ultra-thin range hood switching from the closed state to the open state, the substrate and the smoke baffle maintain a flush posture with each other; when the ultra-thin range hood is in the closed state, the substrate and the smoke baffle are in a vertical state and cover and block the front plate and the smoke inlet plate of the ultra-thin range hood.

[0010] As a further improvement of the present invention, the rotation connection assembly includes a first open-chain multi-link and a second open-chain multi-link, a limit slider slidably connected to the smoke collecting housing in the front-back direction, and a limit link rotatably connecting the limit slider and the rod body of the first open-chain multi-link or the second open-chain multi-link; the rod bodies of the first open-chain multi-link and the second open-chain multi-link are rotatably connected to each other, both ends of the first open-chain multi-link and the second open-chain multi-link are respectively rotatably connected to the smoke collecting housing and the substrate, and the rotation connection ends of the first open-chain multi-link and the second open-chain multi-link on the smoke collecting housing are spaced apart in the front-back direction, and the rotation connection ends on the substrate are spaced apart longitudinally; the limit slider has a maximum forward sliding stroke corresponding to the maximum rotation angle of the substrate.

[0011] As a further improvement of the present invention, the rotation connection assembly further includes an elastic reset, and the elastic reset member acts on the limit slider to drive the limit slider to slide towards the maximum stroke.

[0012] As a further improvement of the present invention, the bottom of the substrate has a horizontal axis arranged transversely, the top of the smoke baffle has at least one bushing rotatably sleeved on the horizontal axis, and the bushing has a transmission arm rotatably connected to the transmission assembly.

[0013] As a further improvement of the present invention, the linkage assembly includes a linkage slide rail longitudinally arranged on the inner surface of the substrate, a substrate linkage bracket slidably connected to the linkage slide rail, and a smoke inlet plate linkage bracket arranged on the smoke inlet plate, and the substrate linkage bracket and the smoke inlet plate linkage bracket are rotatably connected.

[0014] As a further improvement of the present invention, upper wing plates and lower wing plates that are inwardly retracted rearward are respectively provided on both sides of the substrate and both sides of the smoke baffle, for always closing the gaps between the substrate, the smoke baffle and both sides of the window during the process of the ultra-thin range hood being switched from the closed state to the open state.

[0015] As a further improvement of the present invention, the smoke collecting housing is provided with at least one temperature sensor for detecting the temperature of the cookware placed on the stove.

[0016] Advantages of the present invention: Through the linkage and coordination of the substrate and the smoke inlet plate, and the cooperation of the smoke baffle, a double breakthrough in the spatial form and the oil fume extraction efficiency of the ultra-thin range hood is achieved; by the linkage component restricting the substrate and the smoke inlet plate to fold into the window of the smoke collecting housing, and the smoke baffle blocking the smoke inlet of the smoke inlet plate, the oil stain smell inside the smoke collecting housing can be prevented from escaping in the closed state, and the ultra-thin form of the ultra-thin range hood can be maintained; when in the working state, both the substrate and the smoke baffle extend forward to the front side of the window, moving the overall smoke inlet forward, significantly shortening the front-rear distance between the smoke inlet and the cookware on the stove, directly expanding the range of the negative pressure capture area. At the same time, the smoke baffle extends forward synchronously with the rotation of the substrate, directly intercepting the outward-diffusing oil fume airflow and guiding the intercepted oil fume to the smoke inlet, reducing the probability of oil fume escaping upward and improving the oil fume extraction efficiency of the ultra-thin range hood; Through the cooperation of the elastic member with the main transmission link and the secondary transmission link, the single linear driving force is decomposed into two timing stages of the main rotation of the substrate and the adjustment rotation of the smoke baffle. In the open state of the ultra-thin range hood, the rapid formation of the triangular support structure is preferably ensured, and in the adjustment state, the coverage range of the smoke baffle is refined and expanded to avoid interference between the two-stage movements; the setting of the linear drive of the driver and the multi-link cooperation of the transmission component utilize the deformation threshold of the elastic member to realize the automatic switching of the motion mode, reducing the system complexity and the risk of failure; after the triangular support structure is locked in the open state of the ultra-thin range hood, the independent rotation of the smoke baffle makes the ultra-thin range hood have better adaptability for different cooking methods. Description of the drawings

[0017] The following will describe in detail the preferred embodiments of the present invention through the drawings to help understand the purpose and advantages of the present invention, where: Figure 1 is a schematic structural diagram of the ultra-thin range hood; Figure 2 is a schematic diagram of the fan in the smoke collecting housing; Figure 3 is a schematic cross-sectional view of the ultra-thin range hood showing the transmission component; Figure 4 is a schematic diagram of the ultra-thin range hood being sequentially switched from the closed state to the open state and the adjustment state; Figure 5 is Figure 3 a partially enlarged schematic view; Figure 6 is a schematic view of the structure of the horizontal axis; Figure 7 is a schematic view of the linkage component; Figure 8 is a schematic view of the temperature sensor set on the ultra-thin range hood; Figure 9 is a schematic view of the working state of the temperature sensor detecting the temperature of the cookware; Figure 10 is a cross-sectional schematic view of the ultra-thin range hood showing the temperature sensor and the power supply box; Figure 11 is a schematic view of the ultra-thin range hood showing the oil box and the lighting lamp. Detailed implementation manners

[0018] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0019] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may accordingly change depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0020] An ultra-thin range hood, referring to Figure 1 , Figure 2 , Figure 3 , includes a smoke collecting housing 1 and a fan 2. The front plate 13 of the smoke collecting housing 1 has a window 11, and the fan 2 is arranged inside the smoke collecting housing 1. The ultra-thin range hood further includes a base plate 31, a smoke baffle 32 and an air inlet plate 33. The base plate 31 is horizontally rotatably arranged at the top of the window 11, the smoke baffle 32 is arranged at the bottom of the base plate 31, the air inlet plate 33 is horizontally rotatably arranged at the bottom of the window 11, and a linkage component is arranged between the base plate 31 and the air inlet plate 33. The linkage component is movably connected to the base plate 31 and the air inlet plate 33, so that the two can rotate synchronously. Based on the movable connection between the base plate 31 and the air inlet plate 33, the ultra-thin range hood has a closed state and an open state. The ultra-thin range hood further includes a driver 41 and a transmission component. The transmission component is in transmission connection with the driver 41 and the base plate 31. The driver 41 is used to provide driving force and drive the base plate 31 to rotate through the transmission component, and drive the smoke baffle 32 to rotate synchronously, so that the ultra-thin range hood can be switched between the closed state and the open state.

[0021] The closed state of the ultra-thin range hood corresponds to the shutdown of the blower 2, and the open state corresponds to the startup of the blower 2. In the closed state of the ultra-thin range hood, the base plate 31, the smoke inlet plate 33 and the smoke baffle 32 are retracted into the window 11, and the smoke baffle 32 blocks the smoke inlet 33a of the smoke inlet plate 33. As the base plate 31 and the smoke inlet plate 33 rotate synchronously, the ultra-thin range hood switches from the closed state to the open state. In the open state of the ultra-thin range hood, the base plate 31 and the smoke inlet plate 33 extend forward from the window 11 at the same time, so that the smoke inlet 33a of the smoke inlet plate 33 is exposed to suck in the fumes. The smoke baffle 32 is located in front of the smoke inlet 33a to block the fumes and direct them to the smoke inlet 33a.

[0022] For the ultra-thin range hood of this embodiment, through the linkage and cooperation of the base plate 31 and the smoke inlet plate 33, and the cooperation of the smoke baffle 32, a double breakthrough in the spatial form and the fume extraction efficiency of the ultra-thin range hood is achieved. Specifically, in the closed state, the base plate 31 and the smoke inlet plate 33 are retracted into the window 11 of the smoke collecting housing 1 under the restraint of the linkage component, and the smoke baffle 32 blocks the smoke inlet 33a of the smoke inlet plate 33, which can prevent the oil stain smell inside the smoke collecting housing 1 from escaping in the closed state. The retracted postures of the base plate 31, the smoke inlet plate 33 and the smoke baffle 32 make the combined plate formed by the three not bulge forward, so as to maintain the ultra-thin form of the ultra-thin range hood. When the ultra-thin range hood switches to the working state, the base plate 31 and the smoke baffle 32 expand upward and downward in front of the window 11 respectively. This dynamic expansion process moves the whole smoke inlet 33a forward, significantly shortening the front-back distance between the smoke inlet 33a and the cooking utensil of the stove, directly expanding the range of the negative pressure capture area. At the same time, the smoke baffle 32 extends forward synchronously with the rotation of the base plate 31, and its position accurately covers the front side of the smoke inlet 33a, forming a physical barrier surface. On the one hand, it directly intercepts the fume airflow diffusing outward, and on the other hand, it guides the intercepted fumes to the smoke inlet 33a, forming a synergistic drainage effect with the negative pressure generated by the blower 2, reducing the escape probability of the fumes during the rising process, and improving the fume extraction efficiency of the ultra-thin range hood. In addition, in the open state, the base plate 31, the smoke inlet plate 33 and the front plate 13 of the smoke collecting housing 1 present a triangular support structure, which has good mechanical structure strength to maintain the stability of the open state of the ultra-thin range hood.

[0023] In this embodiment, referring to Figure 3, at least one rotation connection component 5 is provided corresponding to the top inside the smoke collection housing 1. The rotation connection component 5 is movably connected to the substrate 31 to allow the substrate 31 to rotate. Generally, two rotation connection components 5 are provided and are symmetrically arranged about the left and right of the smoke collection housing 1. The rotation connection component 5 defines the maximum rotation angle of the substrate 31, and when the substrate 31 rotates to the maximum rotation angle, it corresponds to the open state of the ultra-thin range hood. The rotation connection component 5 serves as the mechanical limit reference for the rotation of the substrate 31. Through rigid connection and angle constraint, it ensures that the substrate 31 accurately corresponds to the fully open state of the ultra-thin range hood at the maximum rotation angle, avoiding problems such as structural deformation caused by over-rotation, and by using the rotation connection component 5 as the fixed fulcrum at the maximum rotation angle of the substrate 31, the structural stability of the substrate 31 is improved, so that the geometric shape of the triangular support structure of the components of the ultra-thin range hood remains constant in the open state. For the smoke baffle 32, the smoke baffle 32 is horizontally rotatably arranged at the bottom of the substrate 31. In addition to drivingly connecting the driver 41 and the substrate 31, the transmission component also drivingly connects the smoke baffle 32, so that the smoke baffle 32 can rotate around the bottom of the substrate 31, thereby being able to expand the front and rear range of the smoke baffle 32 to block oil fumes, and directly expanding the interception depth of the oil fume diffusion path to enhance the performance of avoiding oil fume escape; in addition, through a single power source of the driver 41 and being driven by the transmission component, the coordinated actions of three components, namely the substrate 31, the smoke inlet plate 33, and the smoke baffle 32, are controlled simultaneously, which improves the integration and efficiency as a whole.

[0024] In this embodiment, referring to Figure 3 , for the transmission component, it includes a driving link 42 rotatably connected to the driver 41, a main transmission link 43 rotatably connected to the substrate 31, a secondary transmission link 44 rotatably connected to the smoke baffle 32, and an elastic member 45 connecting the main transmission link 43 and the substrate 31. The driver 41 is configured for linear drive. More specifically, the driver 41 is provided with a push rod 411 extending vertically. The push rod 411 is rotatably connected to the driving link 42, and the two ends of the driving link 42 and the main transmission link 43 are rotatably connected. The end of the secondary transmission link 44 is rotatably connected to the rod body of the main transmission link 43.

[0025] The transmission component of this embodiment can make the substrate 31 and the smoke baffle 32 relatively stationary during the process of the ultra-thin range hood transitioning from the closed state to the open state, and when the ultra-thin range hood reaches the open state and the driver 41 continues to drive, the smoke baffle 32 is in an adjustment state of rotating around the bottom of the substrate 31. The process of the ultra-thin range hood from the closed state to the open state and then to the adjustment state is as follows: Referring to Figure 4 and in combination with Figure 3, when the ultra-thin range hood is in the closed state, the substrate 31 and the smoke baffle 32 are retracted into the window 11 of the smoke collecting housing 1, the smoke baffle 32 is closely attached to the air inlet 33a, and the elastic member 45 is in a natural extended state. The driver 41 is activated to drive the push rod 411 to move vertically downward, driving the driving link 42 to rotate around its rotation connection point on the push rod 411, so that the rotation connection point between the driving link 42 and the main transmission link 43 is stressed. Since there is no relative rotation between the main transmission link 43 and the substrate 31, the elastic member 45 remains in a rigid connection state. The substrate 31 is pulled by the main transmission link 43 and rotates upward around the rotation connection assembly 5. The smoke baffle 32 rotates synchronously with the substrate 31 through the linkage assembly. The sub-transmission link 44 is in a free follow-up state because there is no relative rotation between the main transmission link 43 and the substrate 31, so that the smoke baffle 32 and the substrate 31 remain relatively stationary. When the substrate 31 rotates to the maximum angle defined by the rotation connection assembly 5, the substrate 31, the air inlet plate 33 and the front plate 13 of the smoke collecting housing 1 form a triangular support structure, and the range hood switches to the open state. At this time, the elastic member 45 is still not compressed, and the smoke baffle 32 still maintains its attitude relative to the substrate 31. In the open state, the driver 41 continues to drive, that is, the driver 41 continues to drive the push rod 411 to move vertically downward. Due to the limitation of the maximum rotation angle of the substrate 31 by the rotation connection assembly 5, it is basically impossible to continue rotating. Therefore, relative rotation occurs between the main transmission link 43 and the substrate 31, and the force of the driving link 42 pushing the main transmission link 43 exceeds the pre-tightening force of the elastic member 45, and the elastic member 45 is gradually stretched or compressed. In this embodiment, the position where the elastic member 45 is connected causes the elastic member 45 to be gradually stretched during this process. The rotation of the main transmission link 43 relative to the substrate 31 forces the sub-transmission link 44 to rotate relative to the main transmission link 43, and has a pulling effect on the smoke baffle 32. The smoke baffle 32 rotates independently around the bottom of the substrate 31 under the traction of the sub-transmission link 44, and its attitude gradually becomes horizontal, so that the front and rear ranges of the smoke baffle 32 blocking the oil fume gradually expand. Therefore, the ultra-thin range hood enters the adjustment state from the open state.

[0026] In the transmission component of this embodiment, through the cooperation of the elastic member 45 with the main transmission connecting rod 43 and the auxiliary transmission connecting rod 44, the single linear driving force is decomposed into two timing stages: the main rotation of the substrate 31 and the adjustment rotation of the smoke baffle 32. In the opening state of the ultra-thin range hood, it preferentially ensures the rapid formation of the triangular support structure, and in the adjustment state, it finely expands the coverage range of the smoke baffle 32 to avoid interference between the two-stage movements. The setting of the linear drive of the driver 41 and the multi-link cooperation of the transmission component utilizes the deformation threshold of the elastic member 45 to realize the automatic switching of the motion mode. This pure mechanical linkage structure obviously reduces the system complexity and failure risk compared with the requirements of electronic sensors and program control. After the triangular support structure is locked in the opening state of the ultra-thin range hood, the independent rotation of the smoke baffle 32 can adjust the range of blocking oil fume in front of and behind it according to different oil fume intensities, making the ultra-thin range hood of this embodiment have better adaptability for different cooking methods.

[0027] In this embodiment, during the process of the ultra-thin range hood switching from the closed state to the opening state, the substrate 31 and the smoke baffle 32 maintain a flush posture with each other. In addition, in the closed state of the ultra-thin range hood, the substrate 31 and the smoke baffle 32 are in a vertical state and completely cover and block the front plate 13 and the smoke inlet plate 33 of the ultra-thin range hood. The substrate 31 and the smoke baffle 32 form a seamless closed plane on the front of the ultra-thin range hood in the closed state, completely eliminating the splicing gaps common in traditional folding structures, preventing dust from invading the internal fan 2 through the gaps, and improving the overall aesthetics of the ultra-thin range hood through the visual integration design.

[0028] In this embodiment, referring to Figure 5 and in combination with Figure 3, for the rotating connection assembly 5, it includes a first open-chain multi-link 51, a second open-chain multi-link 52, a limit slider 53, and a limit link 54. Among them, both the first open-chain multi-link 51 and the second open-chain multi-link 52 include at least two sequentially connected links r. The rod bodies of the first open-chain multi-link 51 and the second multi-link structure are rotatably connected to each other. The two ends of the first open-chain multi-link 51 and the second open-chain multi-link 52 are respectively rotatably connected to the inner top of the smoke collecting housing 1 and the inner surface of the substrate 31. Moreover, the rotational connection ends 51a, 52a of the first open-chain multi-link 51 and the second open-chain multi-link 52 on the smoke collecting housing 1 are spaced front and back, and the rotational connection ends 51b, 52b on the substrate 31 are spaced longitudinally. The limit slider 53 is slidably connected to the smoke collecting housing 1 in the front-back direction, and the limit slider 53 has a maximum forward sliding stroke. More specifically, a limit slide rail 55 extending in the front-back direction is provided on the inner top of the smoke collecting housing 1. The limit slider 53 is slidably connected to the limit slide rail 55, and a stop end abutted against the limit slider 53 is provided on the limit slide rail 55 to limit the maximum forward sliding stroke of the limit slider 53 to correspond to the maximum rotation angle of the substrate 31. The first open-chain multi-link 51 and the second open-chain multi-link 52 are respectively connected to the smoke collecting housing 1 at intervals in the front-back direction and connected to the inner surface of the substrate 31 in a longitudinally spaced manner, forming a dynamic support system with two fulcrums. When the substrate 31 rotates, the rod bodies of the first open-chain multi-link 51 and the second open-chain multi-link 52 compensate for the displacement difference through relative rotation, enabling the substrate 31 to have a unique rotation trajectory during the unfolding process. Moreover, the double-fulcrum system constructed by the first open-chain multi-link 51 and the second open-chain multi-link 52 improves the smoothness of the substrate 31 during rotation and avoids situations such as jitter and skew. The limit slider 53, through the linear relationship between the forward movement stroke of the slider and the rotation angle of the substrate 31, allows the substrate 31 to rotate and unfold smoothly during the process of switching from the closed state to the open state. When the substrate 31 approaches the maximum rotation angle, the limit slider 53 reaches the maximum movement stroke to forcibly cut off the continuous deformation of the first open-chain multi-link 51 and the second open-chain multi-link 52, enabling the substrate 31 to accurately stop at the preset angle and improving the accuracy of operation.

[0029] In this embodiment, the rotational connection assembly 5 further includes an elastic reset member 56. The elastic reset member 56 is set as a compression spring and acts on the limit slider 53 to drive the limit slider 53 to slide towards the maximum stroke. By introducing the elastic reset member 56, the self-resetting ability and motion stability of the rotational connection assembly 5 are strengthened. The elastic reset member 56 acts on the limit slider 53 and continuously applies an elastic force towards the maximum stroke direction, so that the substrate 31 automatically maintains the open angle lock in the non-working state, avoiding accidental retraction caused by vibration or gravity. When the driver 41 drives the substrate 31 to rotate, the pre-tightening force direction of the compression spring is the same as the driving direction, assisting in offsetting the frictional resistance of the multi-link mechanism composed of the first open-chain multi-link 51 and the second open-chain multi-link 52, reducing the driving energy consumption, and making the rotation of the substrate 31 smoother.

[0030] In this embodiment, referring to Figure 6 and combining with Figure 3 , for the rotational connection between the smoke baffle 32 and the substrate 31, the bottom of the substrate 31 has a horizontally arranged transverse axis 311. At least one substrate connection piece 312 is arranged on the transverse axis 311 and fixedly connected to the substrate 31. The top of the smoke baffle 32 has at least one bushing 321. The bushing 321 is rotatably sleeved on the transverse axis 311. For the specific setting relationship between the bushing 321 and the smoke baffle 32, a smoke baffle connection piece 322 is arranged on the bushing 321 and fixedly connected to the smoke baffle 32. A transmission arm 323 is further arranged on the bushing 321, and the transmission arm 323 is rotatably connected to the transmission component, that is, the auxiliary transmission link 44. Through the integrated setting of the transverse axis 311 and the bushing 321, the rotational adjustment of the smoke baffle 32 in the adjustment state has better stability.

[0031] In this embodiment, referring to Figure 7 and combining with Figure 3 , for the linkage assembly, it includes a linkage slide rail 313, a substrate linkage bracket 314, and a smoke inlet plate linkage bracket 331. Among them, the linkage slide rail 313 is longitudinally arranged on the inner surface of the substrate 31. The substrate linkage bracket 314 is slidably connected to the linkage slide rail 313 so that it can slide longitudinally. The smoke inlet plate linkage bracket 331 is arranged on the smoke inlet plate 33 and is rotatably connected to the substrate linkage bracket 314. At least one linkage assembly is provided, usually two and symmetrically arranged left and right, which can improve the smoothness and stability of the synchronous rotation of the smoke inlet plate 33. Further, a connection seat 12 corresponding to the smoke inlet plate linkage bracket 331 is arranged at the inner bottom of the smoke collection housing 1. The smoke inlet plate linkage bracket 331 extends longitudinally and is arranged on the inner surface of the smoke inlet plate 33. Its top end is rotatably connected to the substrate linkage bracket 314, and its bottom end is rotatably connected to the connection seat 12 to realize the synchronous rotation of the smoke inlet plate 33 with the substrate 31.

[0032] In this embodiment, referring to Figure 1, on both sides of the substrate 31 and both sides of the smoke baffle 32, upper wing plates 31a and lower wing plates 32a that are inwardly retracted towards the rear side are respectively provided, which are used to always seal the gaps between the substrate 31, the smoke baffle 32 and both sides of the window 11 during the process of the ultra-thin range hood switching from the closed state to the open state. In this embodiment, through the inward retraction settings of the upper wing plate 31a and the lower wing plate 32a, dynamic sealing of the substrate 31 and the smoke baffle 32 throughout the movement process is achieved; when the ultra-thin range hood is in the closed state, the upper wing plate 31a and the lower wing plate 32a are completely embedded in both sides of the window 11 to eliminate the lateral gap; during the opening process of the upper wing plate 31a and the lower wing plate 32a, the upper wing plate 31a and the lower wing plate 32a rotate synchronously with the substrate 31 and the smoke baffle 32, and always slide along both sides of the window 11 in a fitting manner to form a continuous closed interface, blocking the path for oil fumes to escape from both sides.

[0033] The ultra-thin range hood of this embodiment refers to Figure 8 , Figure 9 , Figure 10 , a temperature sensor 6 is provided. The temperature sensor 6 is used to detect the temperature of the cookware placed on the cooking stove to give a judgment condition for the fan 2 to adjust the frequency. The temperature sensor 6 is arranged in the smoke collecting housing 1. A through hole h is provided on the bottom plate 14 of the smoke collecting housing 1 so that a part of the temperature sensor 6 is exposed to perform the work of detecting the temperature. The temperature sensor 6 includes a heat insulation protective shell 61 and a temperature sensing sensor 62, and the temperature sensing sensor 62 is arranged in the heat insulation protective shell 61.

[0034] In the ultra-thin range hood of this embodiment, by providing the through hole h on the bottom plate 14 of the smoke collecting housing 1, the temperature sensor 6 is close to the cooking stove, the vertical distance between the temperature sensing sensor 62 and the cookware is shortened, significantly improving the accuracy of temperature detection. And only a part of the temperature sensor 6 is exposed from the through hole h to reduce the direct contact of heat radiation generated by the temperature sensor 6 and the cooking stove. And on this basis, the temperature sensor 6 weakens heat conduction by setting the heat insulation protective shell 61, playing a heat insulation role for the temperature sensing sensor 62 arranged in the heat insulation protective shell 61, thereby effectively reducing the working temperature of the temperature sensing sensor 62 to ensure that its performance is in a normal state.

[0035] In this embodiment, when the cooking appliance starts to work, the temperature of the cookware placed on the cooking appliance gradually rises. For example, when the temperature t1 detected by the temperature sensor 6 ≥ 50°C, the fan 2 starts to operate to extract oil fumes; when the detected temperature t2 ≥ 240°C, the power of the fan 2 is increased to the high gear, and the extraction and exhaust air volume is increased to accelerate the speed of exhausting oil fumes, so as to improve the air quality in the kitchen and give people a better experience; when the detected temperature t2 ≥ 300°C, it is determined that dry burning occurs. At this time, the gas switch of the cooking appliance will be automatically closed through the smoke-cooker linkage program, and at the same time, the power of the fan 2 is increased again to accelerate the exhaust of the odorous air. After a period of time, its rotation speed is reduced to achieve the purpose of reducing noise. In addition, the detected temperature and the corresponding power setting of the fan 2 are not limited to the above three gears, and the temperature is reasonably set according to the actual configuration of the ultra-thin range hood, and is not limited to 50°C, 240°C and 300°C either.

[0036] In this embodiment, the temperature sensing sensor 62 is set as an infrared temperature sensing sensor 62, which has the advantages of high temperature resolution, fast response speed, high measurement accuracy and good stability.

[0037] In this embodiment, the temperature sensor 6 further includes a heat insulation layer provided on the heat insulation protective shell 61 for heat insulation of the temperature sensing sensor 62. By providing the heat insulation layer on the temperature sensor 6, the high temperature resistance performance of the temperature sensing sensor 62 is strengthened on the premise of ensuring the temperature sensing accuracy, so as to further reduce the working temperature of the temperature sensing sensor 62. The heat insulation layer can be specifically set as an aerogel composite layer, a heat insulation cotton layer, a graphene aerogel felt layer, etc., all of which have good heat insulation effects.

[0038] In this embodiment, referring to Figure 10 , the bottom plate 14 of the smoke collecting housing 1 includes a front part 141 and a rear part 142 of the bottom plate. Among them, the front part 141 of the bottom plate is inclined upward from back to front, and the through hole h is provided on the front part 141 of the bottom plate. The rear part 142 of the bottom plate is horizontally arranged and is provided with an oil box 15. Due to the ultra-thin form of the ultra-thin range hood, the spatial position of the temperature sensor 6 relative to the cooking appliance is relatively rearward. By the inclined setting of the front part 141 of the bottom plate, the detection angle of the temperature sensor 6 is correspondingly inclined instead of vertically downward, so that it is aligned with the cooking appliance, thereby optimizing the spatial path of heat signal capture and improving the detection accuracy.

[0039] In this embodiment, the front part of the oil box 15 is inclined forward from the bottom edge to the top edge, so that the smoke collecting housing 1 is in an inclined form from the front part 141 of the bottom plate to the front part of the oil box 15, so as to improve the overall aesthetic degree of the ultra-thin range hood.

[0040] In this embodiment, two temperature sensors 6 are provided and are laterally spaced apart from each other. The two temperature sensors 6 are respectively used to detect the cookware on two corresponding cooktops. Through the lateral independent layout of the dual temperature sensors 6, accurate zonal detection and targeted response to the dual-cooktop working conditions are achieved. The two temperature sensors 6 are respectively aligned with the core heat generation areas of the cookware on the left and right cooktops, enabling the two temperature sensors 6 to work independently and improving the accuracy of temperature detection.

[0041] In this embodiment, both of the two temperature sensors 6 are laterally offset from the corresponding cooktops, and both of the two temperature sensors 6 are offset from the corresponding cooktops in a direction away from the middle of the smoke collecting housing 1. Through the lateral outward offset design of the dual temperature sensors 6, the detection accuracy and the anti-interference requirements are balanced. Specifically, the oil fume is mainly concentrated in the middle area and is sucked in by the smoke inlet 33a. The temperature sensors 6 are far away from the main oil fume rising channel, reducing the direct adhesion of oil mist and the impact of high-temperature air flow, and reducing the working temperature to improve the durability of the temperature sensing sensor 62; secondly, it can avoid the oil fume as much as possible, thereby reducing the interference of oil fume turbulence.

[0042] In this embodiment, referring to Figure 10 and Figure 11 , the temperature sensor 6 further includes a signal processor 63 disposed in the heat insulation protective shell 61. A power supply box 7 is provided in the smoke collecting housing 1, and a power supply for supplying power to the blower 2 and the driver 41 and a main board 71 are provided in the power supply box 7. The signal processor 63 is used to process the data detected by the temperature sensing sensor 62 and convert it into a signal recognizable by the main board 71. The main board 71 is used to drive the blower 2 and adjust the power of the blower 2 through the signal.

[0043] In this embodiment, referring to Figure 11 , one side of the smoke collecting housing 1 is provided with an installation groove 1c for installing the power supply box 7, and a detachable box cover 7a is provided on the surface of the power supply box 7 exposed in the installation groove 1c. The main board 71 and the power supply are centrally packaged in the side power supply box 7, and an independent maintenance unit is formed through the detachable box cover 7a. When performing maintenance, the power supply or the main board 71 can be quickly replaced without disassembling the whole machine.

[0044] In this embodiment, referring to Figure 11, on the front sides of the two lateral parts of the smoke collecting housing 1, there are outward convex structures 1a that bulge outward relative to the rear sides, and on the rear sides, there are inward concave structures 1b that are recessed inward relative to the front sides. The installation groove 1c is arranged on the inward concave structure 1b of one of the lateral parts, and lighting lamps 16 are arranged on the back surfaces of both outward convex structures 1a. When the box cover 7a is disassembled, the light of the lighting lamps 16 on the back surfaces of the outward convex structures 1a directly projects onto the installation groove 1c in the concave area, forming a local shadowless lighting environment, enabling clear identification of the internal components of the power supply box 7 without the need to hold tools, reducing the risk of misoperation; at the same time, since the lighting lamps 16 are arranged on the back surfaces of the outward convex structures, they can also serve as ambient lights when turned on, taking into account both practicality and visual aesthetics.

[0045] In this embodiment, at least one wire clip 1d is arranged on the inward concave structure 1b provided with the installation groove 1c for binding the power cord 72 of the power supply box 7. The wire clip 1d fixes the routing of the power cord, avoiding the wires from being loose and entangled, and improving the neatness and the safety of the wire routing.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultra-thin range hood, characterized in that, It includes a smoke collecting housing (1) and a fan (2) located inside the smoke collecting housing (1). The front plate (13) of the smoke collecting housing (1) has a window (11). And, a base plate (31) rotatably arranged horizontally at the top of the window (11), a smoke baffle (32) arranged at the bottom of the base plate (31), and a smoke inlet plate (33) rotatably arranged horizontally at the bottom of the window (11) and having a smoke inlet (33a); the base plate (31) and the smoke inlet plate (33) are movably connected by a linkage assembly so that the two can rotate synchronously. The ultra-thin range hood has a closed state in which the base plate (31), the smoke inlet plate (33) and the smoke baffle (32) are all retracted in the window (11), and an open state in which they all extend forward of the window (11). In the closed state, the smoke baffle (32) blocks the smoke inlet (33a), and in the open state, the smoke baffle (32) is located in front of the smoke inlet (33a) to block oil fumes and direct them to the smoke inlet (33a). And, a driver (41) and a transmission assembly drivingly connected between the driver (41) and the base plate (31), the driver (41) being configured to drive the base plate (31) to rotate through the transmission assembly.

2. The ultra-thin range hood according to claim 1, wherein, The smoke collecting housing (1) is provided with a rotational connection assembly (5) movably connected to at least one of the base plates (31). The rotational connection assembly (5) defines the maximum rotation angle of the base plate (31), and the maximum rotation angle corresponds to the open state of the ultra-thin range hood; the smoke baffle (32) is rotatably arranged horizontally at the bottom of the base plate (31), and the transmission assembly is also drivingly connected to the smoke baffle (32) so that the smoke baffle (32) can rotate around the bottom of the base plate (31) to expand the front and rear range of the smoke baffle (32) for blocking oil fumes.

3. The ultra-thin range hood according to claim 2, wherein, The transmission assembly includes a driving link (42) rotatably connected to the driver (41), a main transmission link (43) rotatably connected to the base plate (31), a secondary transmission link (44) rotatably connected to the smoke baffle (32), and an elastic member (45) connecting the main transmission link (43) and the base plate (31); the driver (41) is configured for linear drive, the two ends of the driving link (42) and the main transmission link (43) are rotatably connected, and the end of the secondary transmission link (44) is rotatably connected to the rod body of the main transmission link (43), so that the base plate (31) and the smoke baffle (32) are relatively stationary during the process of the ultra-thin range hood transitioning from the closed state to the open state, and when the ultra-thin range hood reaches the open state and the driver (41) continues to drive, the smoke baffle (32) rotates around the bottom of the base plate (31) in an adjustment state.

4. The ultra-thin range hood according to claim 3, characterized in that, During the process of the ultra-thin range hood switching from the closed state to the open state, the substrate (31) and the smoke baffle (32) maintain a flush posture with each other; when the ultra-thin range hood is in the closed state, the substrate (31) and the smoke baffle (32) are in a vertical state and cover and block the front plate (13) and the smoke inlet plate (33) of the ultra-thin range hood.

5. The ultra-thin range hood according to claim 2, characterized in that, The rotation connection assembly (5) includes a first open-chain multi-link (51) and a second open-chain multi-link (52), a limit slider (53) slidably connected to the smoke collecting housing (1) in the front-back direction, and a limit link (54) rotatably connecting the limit slider (53) and the rod body of the first open-chain multi-link (51) or the second open-chain multi-link (52); the rod bodies of the first open-chain multi-link (51) and the second open-chain multi-link (52) are rotatably connected to each other, and both ends of the first open-chain multi-link (51) and the second open-chain multi-link (52) are respectively rotatably connected to the smoke collecting housing (1) and the substrate (31), and the rotation connection (51a) (52a) ends of the first open-chain multi-link (51) and the second open-chain multi-link (52) on the smoke collecting housing (1) are spaced front and back, and the rotation connection ends (51b) (52b) on the substrate (31) are spaced longitudinally; the limit slider (53) has a maximum forward sliding stroke corresponding to the maximum rotation angle of the substrate (31).

6. The ultra-thin range hood according to claim 5, wherein The rotation connection assembly (5) further includes an elastic reset member (56), and the elastic reset member (56) acts on the limit slider (53) to drive the limit slider (53) to slide towards the maximum stroke.

7. The ultra-thin range hood according to claim 2, wherein The bottom of the substrate (31) has a horizontal axis (311) arranged transversely, and the top of the smoke baffle (32) has at least one bushing (321) rotatably sleeved on the horizontal axis (311), and a transmission arm (323) rotatably connecting the transmission assembly is provided on the bushing (321).

8. The ultra-thin range hood according to claim 1, wherein, The linkage assembly includes a linkage slide rail (313) longitudinally arranged on the inner surface of the substrate (31), a substrate linkage bracket (314) slidably connected to the linkage slide rail (313), and a smoke inlet plate linkage bracket (331) provided on the smoke inlet plate (33), and the substrate linkage bracket (314) and the smoke inlet plate linkage bracket (331) are rotatably connected.

9. The ultra-thin range hood according to any one of claims 1-8, characterized in that, Upper wing plates (31a) and lower wing plates (32a) that are inwardly retracted towards the rear are respectively provided on both sides of the substrate (31) and both sides of the smoke baffle (32) to always close the gaps between the substrate (31), the smoke baffle (32) and both sides of the window (11) during the process of the ultra-thin range hood switching from the closed state to the open state.

10. The ultra-thin range hood according to any one of claims 1-8, characterized in that, The smoke collecting housing (1) is provided with at least one temperature sensor (6) for detecting the temperature of the cookware placed on the cooking stove.

Images